21715690690

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1753}}^1\times {\mathrm{72869}}^1$

素因数の和:74646

約数の個数: 32

約数和(自身を含む): 41411729520

約数和(自身を除く): 19696038830

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 1753, 3506, 8765, 17530, 29801, 59602, 72869, 145738, 149005, 298010, 364345, 728690, 1238773, 2477546, 6193865, 12387730, 127739357, 255478714, 638696785, 1277393570, 2171569069, 4343138138, 10857845345, 21715690690]

約数ペア:

[(1, 21715690690), (2, 10857845345), (5, 4343138138), (10, 2171569069), (17, 1277393570), (34, 638696785), (85, 255478714), (170, 127739357), (1753, 12387730), (3506, 6193865), (8765, 2477546), (17530, 1238773), (29801, 728690), (59602, 364345), (72869, 298010), (145738, 149005)]