21565064

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 41572440

約数和(自身を除く): 20007376

約数列:

[1, 2, 4, 8, 53, 106, 181, 212, 281, 362, 424, 562, 724, 1124, 1448, 2248, 9593, 14893, 19186, 29786, 38372, 50861, 59572, 76744, 101722, 119144, 203444, 406888, 2695633, 5391266, 10782532, 21565064]

約数ペア:

[(1, 21565064), (2, 10782532), (4, 5391266), (8, 2695633), (53, 406888), (106, 203444), (181, 119144), (212, 101722), (281, 76744), (362, 59572), (424, 50861), (562, 38372), (724, 29786), (1124, 19186), (1448, 14893), (2248, 9593)]