30831080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{739}}^1$

素因数の和:906

約数の個数: 64

約数和(自身を含む): 79920000

約数和(自身を除く): 49088920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 739, 745, 1043, 1192, 1478, 1490, 2086, 2956, 2980, 3695, 4172, 5173, 5215, 5912, 5960, 7390, 8344, 10346, 10430, 14780, 20692, 20860, 25865, 29560, 41384, 41720, 51730, 103460, 110111, 206920, 220222, 440444, 550555, 770777, 880888, 1101110, 1541554, 2202220, 3083108, 3853885, 4404440, 6166216, 7707770, 15415540, 30831080]

約数ペア:

[(1, 30831080), (2, 15415540), (4, 7707770), (5, 6166216), (7, 4404440), (8, 3853885), (10, 3083108), (14, 2202220), (20, 1541554), (28, 1101110), (35, 880888), (40, 770777), (56, 550555), (70, 440444), (140, 220222), (149, 206920), (280, 110111), (298, 103460), (596, 51730), (739, 41720), (745, 41384), (1043, 29560), (1192, 25865), (1478, 20860), (1490, 20692), (2086, 14780), (2956, 10430), (2980, 10346), (3695, 8344), (4172, 7390), (5173, 5960), (5215, 5912)]