20921296370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3359}}^1\times {\mathrm{47911}}^1$

素因数の和:51290

約数の個数: 32

約数和(自身を含む): 40568048640

約数和(自身を除く): 19646752270

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 3359, 6718, 16795, 33590, 43667, 47911, 87334, 95822, 218335, 239555, 436670, 479110, 622843, 1245686, 3114215, 6228430, 160933049, 321866098, 804665245, 1609330490, 2092129637, 4184259274, 10460648185, 20921296370]

約数ペア:

[(1, 20921296370), (2, 10460648185), (5, 4184259274), (10, 2092129637), (13, 1609330490), (26, 804665245), (65, 321866098), (130, 160933049), (3359, 6228430), (6718, 3114215), (16795, 1245686), (33590, 622843), (43667, 479110), (47911, 436670), (87334, 239555), (95822, 218335)]