80549980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{7283}}^1$

素因数の和:7378

約数の個数: 48

約数和(自身を含む): 195793920

約数和(自身を除く): 115243940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 2212, 2765, 5530, 7283, 11060, 14566, 29132, 36415, 50981, 72830, 101962, 145660, 203924, 254905, 509810, 575357, 1019620, 1150714, 2301428, 2876785, 4027499, 5753570, 8054998, 11507140, 16109996, 20137495, 40274990, 80549980]

約数ペア:

[(1, 80549980), (2, 40274990), (4, 20137495), (5, 16109996), (7, 11507140), (10, 8054998), (14, 5753570), (20, 4027499), (28, 2876785), (35, 2301428), (70, 1150714), (79, 1019620), (140, 575357), (158, 509810), (316, 254905), (395, 203924), (553, 145660), (790, 101962), (1106, 72830), (1580, 50981), (2212, 36415), (2765, 29132), (5530, 14566), (7283, 11060)]