21294455

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2753}}^1$

素因数の和:2795

約数の個数: 32

約数和(自身を含む): 33312384

約数和(自身を除く): 12017929

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 455, 595, 1105, 1547, 2753, 7735, 13765, 19271, 35789, 46801, 96355, 178945, 234005, 250523, 327607, 608413, 1252615, 1638035, 3042065, 4258891, 21294455]

約数ペア:

[(1, 21294455), (5, 4258891), (7, 3042065), (13, 1638035), (17, 1252615), (35, 608413), (65, 327607), (85, 250523), (91, 234005), (119, 178945), (221, 96355), (455, 46801), (595, 35789), (1105, 19271), (1547, 13765), (2753, 7735)]