20898340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{911}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 46577664

約数和(自身を除く): 25679324

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 911, 1147, 1822, 2294, 3644, 4555, 4588, 5735, 9110, 11470, 18220, 22940, 28241, 33707, 56482, 67414, 112964, 134828, 141205, 168535, 282410, 337070, 564820, 674140, 1044917, 2089834, 4179668, 5224585, 10449170, 20898340]

約数ペア:

[(1, 20898340), (2, 10449170), (4, 5224585), (5, 4179668), (10, 2089834), (20, 1044917), (31, 674140), (37, 564820), (62, 337070), (74, 282410), (124, 168535), (148, 141205), (155, 134828), (185, 112964), (310, 67414), (370, 56482), (620, 33707), (740, 28241), (911, 22940), (1147, 18220), (1822, 11470), (2294, 9110), (3644, 5735), (4555, 4588)]