8647340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 19850880

約数和(自身を除く): 11203540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 421, 790, 842, 1027, 1580, 1684, 2054, 2105, 4108, 4210, 5135, 5473, 8420, 10270, 10946, 20540, 21892, 27365, 33259, 54730, 66518, 109460, 133036, 166295, 332590, 432367, 665180, 864734, 1729468, 2161835, 4323670, 8647340]

約数ペア:

[(1, 8647340), (2, 4323670), (4, 2161835), (5, 1729468), (10, 864734), (13, 665180), (20, 432367), (26, 332590), (52, 166295), (65, 133036), (79, 109460), (130, 66518), (158, 54730), (260, 33259), (316, 27365), (395, 21892), (421, 20540), (790, 10946), (842, 10270), (1027, 8420), (1580, 5473), (1684, 5135), (2054, 4210), (2105, 4108)]