64220920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22613}}^1$

素因数の和:22695

約数の個数: 32

約数和(自身を含む): 146538720

約数和(自身を除く): 82317800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 22613, 45226, 90452, 113065, 180904, 226130, 452260, 904520, 1605523, 3211046, 6422092, 8027615, 12844184, 16055230, 32110460, 64220920]

約数ペア:

[(1, 64220920), (2, 32110460), (4, 16055230), (5, 12844184), (8, 8027615), (10, 6422092), (20, 3211046), (40, 1605523), (71, 904520), (142, 452260), (284, 226130), (355, 180904), (568, 113065), (710, 90452), (1420, 45226), (2840, 22613)]