18663320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1889}}^1$

素因数の和:1932

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 28964680

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1889, 1976, 2470, 3778, 4940, 7556, 9445, 9880, 15112, 18890, 24557, 35891, 37780, 49114, 71782, 75560, 98228, 122785, 143564, 179455, 196456, 245570, 287128, 358910, 466583, 491140, 717820, 933166, 982280, 1435640, 1866332, 2332915, 3732664, 4665830, 9331660, 18663320]

約数ペア:

[(1, 18663320), (2, 9331660), (4, 4665830), (5, 3732664), (8, 2332915), (10, 1866332), (13, 1435640), (19, 982280), (20, 933166), (26, 717820), (38, 491140), (40, 466583), (52, 358910), (65, 287128), (76, 245570), (95, 196456), (104, 179455), (130, 143564), (152, 122785), (190, 98228), (247, 75560), (260, 71782), (380, 49114), (494, 37780), (520, 35891), (760, 24557), (988, 18890), (1235, 15112), (1889, 9880), (1976, 9445), (2470, 7556), (3778, 4940)]