31018820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1487}}^1$

素因数の和:1652

約数の個数: 48

約数和(自身を含む): 74995200

約数和(自身を除く): 43976380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1487, 1490, 2086, 2974, 2980, 4172, 5215, 5948, 7435, 10409, 10430, 14870, 20818, 20860, 29740, 41636, 52045, 104090, 208180, 221563, 443126, 886252, 1107815, 1550941, 2215630, 3101882, 4431260, 6203764, 7754705, 15509410, 31018820]

約数ペア:

[(1, 31018820), (2, 15509410), (4, 7754705), (5, 6203764), (7, 4431260), (10, 3101882), (14, 2215630), (20, 1550941), (28, 1107815), (35, 886252), (70, 443126), (140, 221563), (149, 208180), (298, 104090), (596, 52045), (745, 41636), (1043, 29740), (1487, 20860), (1490, 20818), (2086, 14870), (2974, 10430), (2980, 10409), (4172, 7435), (5215, 5948)]