20193680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19417}}^1$

素因数の和:19443

約数の個数: 40

約数和(自身を含む): 50564472

約数和(自身を除く): 30370792

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19417, 38834, 77668, 97085, 155336, 194170, 252421, 310672, 388340, 504842, 776680, 1009684, 1262105, 1553360, 2019368, 2524210, 4038736, 5048420, 10096840, 20193680]

約数ペア:

[(1, 20193680), (2, 10096840), (4, 5048420), (5, 4038736), (8, 2524210), (10, 2019368), (13, 1553360), (16, 1262105), (20, 1009684), (26, 776680), (40, 504842), (52, 388340), (65, 310672), (80, 252421), (104, 194170), (130, 155336), (208, 97085), (260, 77668), (520, 38834), (1040, 19417)]