21807565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{503}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 8674355

約数列:

[1, 5, 13, 23, 29, 65, 115, 145, 299, 377, 503, 667, 1495, 1885, 2515, 3335, 6539, 8671, 11569, 14587, 32695, 43355, 57845, 72935, 150397, 189631, 335501, 751985, 948155, 1677505, 4361513, 21807565]

約数ペア:

[(1, 21807565), (5, 4361513), (13, 1677505), (23, 948155), (29, 751985), (65, 335501), (115, 189631), (145, 150397), (299, 72935), (377, 57845), (503, 43355), (667, 32695), (1495, 14587), (1885, 11569), (2515, 8671), (3335, 6539)]