20878194012

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1997531}}^1$

素因数の和:1997618

約数の個数: 48

約数和(自身を含む): 53246212992

約数和(自身を除く): 32368018980

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 67, 78, 134, 156, 201, 268, 402, 804, 871, 1742, 2613, 3484, 5226, 10452, 1997531, 3995062, 5992593, 7990124, 11985186, 23970372, 25967903, 51935806, 77903709, 103871612, 133834577, 155807418, 267669154, 311614836, 401503731, 535338308, 803007462, 1606014924, 1739849501, 3479699002, 5219548503, 6959398004, 10439097006, 20878194012]

約数ペア:

[(1, 20878194012), (2, 10439097006), (3, 6959398004), (4, 5219548503), (6, 3479699002), (12, 1739849501), (13, 1606014924), (26, 803007462), (39, 535338308), (52, 401503731), (67, 311614836), (78, 267669154), (134, 155807418), (156, 133834577), (201, 103871612), (268, 77903709), (402, 51935806), (804, 25967903), (871, 23970372), (1742, 11985186), (2613, 7990124), (3484, 5992593), (5226, 3995062), (10452, 1997531)]