21347025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 40961664

約数和(自身を除く): 19614639

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 73, 75, 105, 175, 219, 365, 511, 525, 557, 1095, 1533, 1671, 1825, 2555, 2785, 3899, 5475, 7665, 8355, 11697, 12775, 13925, 19495, 38325, 40661, 41775, 58485, 97475, 121983, 203305, 284627, 292425, 609915, 853881, 1016525, 1423135, 3049575, 4269405, 7115675, 21347025]

約数ペア:

[(1, 21347025), (3, 7115675), (5, 4269405), (7, 3049575), (15, 1423135), (21, 1016525), (25, 853881), (35, 609915), (73, 292425), (75, 284627), (105, 203305), (175, 121983), (219, 97475), (365, 58485), (511, 41775), (525, 40661), (557, 38325), (1095, 19495), (1533, 13925), (1671, 12775), (1825, 11697), (2555, 8355), (2785, 7665), (3899, 5475)]