81162440

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{3079}}^1$

素因数の和:3749

約数の個数: 32

約数和(自身を含む): 182952000

約数和(自身を除く): 101789560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1318, 2636, 3079, 3295, 5272, 6158, 6590, 12316, 13180, 15395, 24632, 26360, 30790, 61580, 123160, 2029061, 4058122, 8116244, 10145305, 16232488, 20290610, 40581220, 81162440]

約数ペア:

[(1, 81162440), (2, 40581220), (4, 20290610), (5, 16232488), (8, 10145305), (10, 8116244), (20, 4058122), (40, 2029061), (659, 123160), (1318, 61580), (2636, 30790), (3079, 26360), (3295, 24632), (5272, 15395), (6158, 13180), (6590, 12316)]