20786280756475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{9570221}}^1$

素因数の和:9570448

約数の個数: 48

約数和(自身を含む): 28609145085024

約数和(自身を除く): 7822864328549

約数列:

[1, 5, 13, 25, 41, 65, 163, 205, 325, 533, 815, 1025, 2119, 2665, 4075, 6683, 10595, 13325, 33415, 52975, 86879, 167075, 434395, 2171975, 9570221, 47851105, 124412873, 239255525, 392379061, 622064365, 1559946023, 1961895305, 3110321825, 5100927793, 7799730115, 9809476525, 20279298299, 25504638965, 38998650575, 63957786943, 101396491495, 127523194825, 319788934715, 506982457475, 831451230259, 1598944673575, 4157256151295, 20786280756475]

約数ペア:

[(1, 20786280756475), (5, 4157256151295), (13, 1598944673575), (25, 831451230259), (41, 506982457475), (65, 319788934715), (163, 127523194825), (205, 101396491495), (325, 63957786943), (533, 38998650575), (815, 25504638965), (1025, 20279298299), (2119, 9809476525), (2665, 7799730115), (4075, 5100927793), (6683, 3110321825), (10595, 1961895305), (13325, 1559946023), (33415, 622064365), (52975, 392379061), (86879, 239255525), (167075, 124412873), (434395, 47851105), (2171975, 9570221)]