20320740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{311}}^1$

素因数の和:351

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 49392540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 90, 99, 108, 110, 121, 132, 135, 165, 180, 198, 220, 242, 270, 297, 311, 330, 363, 396, 484, 495, 540, 594, 605, 622, 660, 726, 933, 990, 1089, 1188, 1210, 1244, 1452, 1485, 1555, 1815, 1866, 1980, 2178, 2420, 2799, 2970, 3110, 3267, 3421, 3630, 3732, 4356, 4665, 5445, 5598, 5940, 6220, 6534, 6842, 7260, 8397, 9330, 10263, 10890, 11196, 13068, 13684, 13995, 16335, 16794, 17105, 18660, 20526, 21780, 27990, 30789, 32670, 33588, 34210, 37631, 41052, 41985, 51315, 55980, 61578, 65340, 68420, 75262, 83970, 92367, 102630, 112893, 123156, 150524, 153945, 167940, 184734, 188155, 205260, 225786, 307890, 338679, 369468, 376310, 451572, 461835, 564465, 615780, 677358, 752620, 923670, 1016037, 1128930, 1354716, 1693395, 1847340, 2032074, 2257860, 3386790, 4064148, 5080185, 6773580, 10160370, 20320740]

約数ペア:

[(1, 20320740), (2, 10160370), (3, 6773580), (4, 5080185), (5, 4064148), (6, 3386790), (9, 2257860), (10, 2032074), (11, 1847340), (12, 1693395), (15, 1354716), (18, 1128930), (20, 1016037), (22, 923670), (27, 752620), (30, 677358), (33, 615780), (36, 564465), (44, 461835), (45, 451572), (54, 376310), (55, 369468), (60, 338679), (66, 307890), (90, 225786), (99, 205260), (108, 188155), (110, 184734), (121, 167940), (132, 153945), (135, 150524), (165, 123156), (180, 112893), (198, 102630), (220, 92367), (242, 83970), (270, 75262), (297, 68420), (311, 65340), (330, 61578), (363, 55980), (396, 51315), (484, 41985), (495, 41052), (540, 37631), (594, 34210), (605, 33588), (622, 32670), (660, 30789), (726, 27990), (933, 21780), (990, 20526), (1089, 18660), (1188, 17105), (1210, 16794), (1244, 16335), (1452, 13995), (1485, 13684), (1555, 13068), (1815, 11196), (1866, 10890), (1980, 10263), (2178, 9330), (2420, 8397), (2799, 7260), (2970, 6842), (3110, 6534), (3267, 6220), (3421, 5940), (3630, 5598), (3732, 5445), (4356, 4665)]