991260790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{38317}}^1$

素因数の和:38536

約数の個数: 32

約数和(自身を含む): 1931227200

約数和(自身を除く): 939966410

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1990, 2587, 5174, 12935, 25870, 38317, 76634, 191585, 383170, 498121, 996242, 2490605, 4981210, 7625083, 15250166, 38125415, 76250830, 99126079, 198252158, 495630395, 991260790]

約数ペア:

[(1, 991260790), (2, 495630395), (5, 198252158), (10, 99126079), (13, 76250830), (26, 38125415), (65, 15250166), (130, 7625083), (199, 4981210), (398, 2490605), (995, 996242), (1990, 498121), (2587, 383170), (5174, 191585), (12935, 76634), (25870, 38317)]