20123261720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{797}}^1\times {\mathrm{5791}}^1$

素因数の和:6708

約数の個数: 64

約数和(自身を含む): 45757958400

約数和(自身を除く): 25634696680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 797, 872, 1090, 1594, 2180, 3188, 3985, 4360, 5791, 6376, 7970, 11582, 15940, 23164, 28955, 31880, 46328, 57910, 86873, 115820, 173746, 231640, 347492, 434365, 631219, 694984, 868730, 1262438, 1737460, 2524876, 3156095, 3474920, 4615427, 5049752, 6312190, 9230854, 12624380, 18461708, 23077135, 25248760, 36923416, 46154270, 92308540, 184617080, 503081543, 1006163086, 2012326172, 2515407715, 4024652344, 5030815430, 10061630860, 20123261720]

約数ペア:

[(1, 20123261720), (2, 10061630860), (4, 5030815430), (5, 4024652344), (8, 2515407715), (10, 2012326172), (20, 1006163086), (40, 503081543), (109, 184617080), (218, 92308540), (436, 46154270), (545, 36923416), (797, 25248760), (872, 23077135), (1090, 18461708), (1594, 12624380), (2180, 9230854), (3188, 6312190), (3985, 5049752), (4360, 4615427), (5791, 3474920), (6376, 3156095), (7970, 2524876), (11582, 1737460), (15940, 1262438), (23164, 868730), (28955, 694984), (31880, 631219), (46328, 434365), (57910, 347492), (86873, 231640), (115820, 173746)]