81284320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39079}}^1$

素因数の和:39107

約数の個数: 48

約数和(自身を含む): 206811360

約数和(自身を除く): 125527040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39079, 78158, 156316, 195395, 312632, 390790, 508027, 625264, 781580, 1016054, 1250528, 1563160, 2032108, 2540135, 3126320, 4064216, 5080270, 6252640, 8128432, 10160540, 16256864, 20321080, 40642160, 81284320]

約数ペア:

[(1, 81284320), (2, 40642160), (4, 20321080), (5, 16256864), (8, 10160540), (10, 8128432), (13, 6252640), (16, 5080270), (20, 4064216), (26, 3126320), (32, 2540135), (40, 2032108), (52, 1563160), (65, 1250528), (80, 1016054), (104, 781580), (130, 625264), (160, 508027), (208, 390790), (260, 312632), (416, 195395), (520, 156316), (1040, 78158), (2080, 39079)]