21903670490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168489773}}^1$

素因数の和:168489793

約数の個数: 16

約数和(自身を含む): 42459423048

約数和(自身を除く): 20555752558

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 168489773, 336979546, 842448865, 1684897730, 2190367049, 4380734098, 10951835245, 21903670490]

約数ペア:

[(1, 21903670490), (2, 10951835245), (5, 4380734098), (10, 2190367049), (13, 1684897730), (26, 842448865), (65, 336979546), (130, 168489773)]