66806920

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{6163}}^1$

素因数の和:6445

約数の個数: 32

約数和(自身を含む): 150894720

約数和(自身を除く): 84087800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 6163, 10840, 12326, 24652, 30815, 49304, 61630, 123260, 246520, 1670173, 3340346, 6680692, 8350865, 13361384, 16701730, 33403460, 66806920]

約数ペア:

[(1, 66806920), (2, 33403460), (4, 16701730), (5, 13361384), (8, 8350865), (10, 6680692), (20, 3340346), (40, 1670173), (271, 246520), (542, 123260), (1084, 61630), (1355, 49304), (2168, 30815), (2710, 24652), (5420, 12326), (6163, 10840)]