20439540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:100

約数の個数: 240

約数和(自身を含む): 74156544

約数和(自身を除く): 53717004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 31, 33, 36, 37, 44, 45, 54, 55, 60, 62, 66, 74, 81, 90, 93, 99, 108, 110, 111, 124, 132, 135, 148, 155, 162, 165, 180, 185, 186, 198, 220, 222, 270, 279, 297, 310, 324, 330, 333, 341, 370, 372, 396, 405, 407, 444, 465, 495, 540, 555, 558, 594, 620, 660, 666, 682, 740, 810, 814, 837, 891, 930, 990, 999, 1023, 1110, 1116, 1147, 1188, 1221, 1332, 1364, 1395, 1485, 1620, 1628, 1665, 1674, 1705, 1782, 1860, 1980, 1998, 2035, 2046, 2220, 2294, 2442, 2511, 2790, 2970, 2997, 3069, 3330, 3348, 3410, 3441, 3564, 3663, 3996, 4070, 4092, 4185, 4455, 4588, 4884, 4995, 5022, 5115, 5580, 5735, 5940, 5994, 6105, 6138, 6660, 6820, 6882, 7326, 8140, 8370, 8910, 9207, 9990, 10044, 10230, 10323, 10989, 11470, 11988, 12210, 12276, 12555, 12617, 13764, 14652, 14985, 15345, 16740, 17205, 17820, 18315, 18414, 19980, 20460, 20646, 21978, 22940, 24420, 25110, 25234, 27621, 29970, 30690, 30969, 32967, 34410, 36630, 36828, 37851, 41292, 43956, 46035, 50220, 50468, 51615, 54945, 55242, 59940, 61380, 61938, 63085, 65934, 68820, 73260, 75702, 92070, 92907, 103230, 109890, 110484, 113553, 123876, 126170, 131868, 138105, 151404, 154845, 164835, 184140, 185814, 189255, 206460, 219780, 227106, 252340, 276210, 309690, 329670, 340659, 371628, 378510, 454212, 464535, 552420, 567765, 619380, 659340, 681318, 757020, 929070, 1021977, 1135530, 1362636, 1703295, 1858140, 2043954, 2271060, 3406590, 4087908, 5109885, 6813180, 10219770, 20439540]

約数ペア:

[(1, 20439540), (2, 10219770), (3, 6813180), (4, 5109885), (5, 4087908), (6, 3406590), (9, 2271060), (10, 2043954), (11, 1858140), (12, 1703295), (15, 1362636), (18, 1135530), (20, 1021977), (22, 929070), (27, 757020), (30, 681318), (31, 659340), (33, 619380), (36, 567765), (37, 552420), (44, 464535), (45, 454212), (54, 378510), (55, 371628), (60, 340659), (62, 329670), (66, 309690), (74, 276210), (81, 252340), (90, 227106), (93, 219780), (99, 206460), (108, 189255), (110, 185814), (111, 184140), (124, 164835), (132, 154845), (135, 151404), (148, 138105), (155, 131868), (162, 126170), (165, 123876), (180, 113553), (185, 110484), (186, 109890), (198, 103230), (220, 92907), (222, 92070), (270, 75702), (279, 73260), (297, 68820), (310, 65934), (324, 63085), (330, 61938), (333, 61380), (341, 59940), (370, 55242), (372, 54945), (396, 51615), (405, 50468), (407, 50220), (444, 46035), (465, 43956), (495, 41292), (540, 37851), (555, 36828), (558, 36630), (594, 34410), (620, 32967), (660, 30969), (666, 30690), (682, 29970), (740, 27621), (810, 25234), (814, 25110), (837, 24420), (891, 22940), (930, 21978), (990, 20646), (999, 20460), (1023, 19980), (1110, 18414), (1116, 18315), (1147, 17820), (1188, 17205), (1221, 16740), (1332, 15345), (1364, 14985), (1395, 14652), (1485, 13764), (1620, 12617), (1628, 12555), (1665, 12276), (1674, 12210), (1705, 11988), (1782, 11470), (1860, 10989), (1980, 10323), (1998, 10230), (2035, 10044), (2046, 9990), (2220, 9207), (2294, 8910), (2442, 8370), (2511, 8140), (2790, 7326), (2970, 6882), (2997, 6820), (3069, 6660), (3330, 6138), (3348, 6105), (3410, 5994), (3441, 5940), (3564, 5735), (3663, 5580), (3996, 5115), (4070, 5022), (4092, 4995), (4185, 4884), (4455, 4588)]