21278700

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:134

約数の個数: 180

約数和(自身を含む): 71839152

約数和(自身を除く): 50560452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 37, 45, 50, 54, 60, 71, 74, 75, 81, 90, 100, 108, 111, 135, 142, 148, 150, 162, 180, 185, 213, 222, 225, 270, 284, 300, 324, 333, 355, 370, 405, 426, 444, 450, 540, 555, 639, 666, 675, 710, 740, 810, 852, 900, 925, 999, 1065, 1110, 1278, 1332, 1350, 1420, 1620, 1665, 1775, 1850, 1917, 1998, 2025, 2130, 2220, 2556, 2627, 2700, 2775, 2997, 3195, 3330, 3550, 3700, 3834, 3996, 4050, 4260, 4995, 5254, 5325, 5550, 5751, 5994, 6390, 6660, 7100, 7668, 7881, 8100, 8325, 9585, 9990, 10508, 10650, 11100, 11502, 11988, 12780, 13135, 14985, 15762, 15975, 16650, 19170, 19980, 21300, 23004, 23643, 24975, 26270, 28755, 29970, 31524, 31950, 33300, 38340, 39405, 47286, 47925, 49950, 52540, 57510, 59940, 63900, 65675, 70929, 74925, 78810, 94572, 95850, 99900, 115020, 118215, 131350, 141858, 143775, 149850, 157620, 191700, 197025, 212787, 236430, 262700, 283716, 287550, 299700, 354645, 394050, 425574, 472860, 575100, 591075, 709290, 788100, 851148, 1063935, 1182150, 1418580, 1773225, 2127870, 2364300, 3546450, 4255740, 5319675, 7092900, 10639350, 21278700]

約数ペア:

[(1, 21278700), (2, 10639350), (3, 7092900), (4, 5319675), (5, 4255740), (6, 3546450), (9, 2364300), (10, 2127870), (12, 1773225), (15, 1418580), (18, 1182150), (20, 1063935), (25, 851148), (27, 788100), (30, 709290), (36, 591075), (37, 575100), (45, 472860), (50, 425574), (54, 394050), (60, 354645), (71, 299700), (74, 287550), (75, 283716), (81, 262700), (90, 236430), (100, 212787), (108, 197025), (111, 191700), (135, 157620), (142, 149850), (148, 143775), (150, 141858), (162, 131350), (180, 118215), (185, 115020), (213, 99900), (222, 95850), (225, 94572), (270, 78810), (284, 74925), (300, 70929), (324, 65675), (333, 63900), (355, 59940), (370, 57510), (405, 52540), (426, 49950), (444, 47925), (450, 47286), (540, 39405), (555, 38340), (639, 33300), (666, 31950), (675, 31524), (710, 29970), (740, 28755), (810, 26270), (852, 24975), (900, 23643), (925, 23004), (999, 21300), (1065, 19980), (1110, 19170), (1278, 16650), (1332, 15975), (1350, 15762), (1420, 14985), (1620, 13135), (1665, 12780), (1775, 11988), (1850, 11502), (1917, 11100), (1998, 10650), (2025, 10508), (2130, 9990), (2220, 9585), (2556, 8325), (2627, 8100), (2700, 7881), (2775, 7668), (2997, 7100), (3195, 6660), (3330, 6390), (3550, 5994), (3700, 5751), (3834, 5550), (3996, 5325), (4050, 5254), (4260, 4995)]