71684920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 171849600

約数和(自身を除く): 100164680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 271, 340, 389, 542, 680, 778, 1084, 1355, 1556, 1945, 2168, 2710, 3112, 3890, 4607, 5420, 6613, 7780, 9214, 10840, 13226, 15560, 18428, 23035, 26452, 33065, 36856, 46070, 52904, 66130, 92140, 105419, 132260, 184280, 210838, 264520, 421676, 527095, 843352, 1054190, 1792123, 2108380, 3584246, 4216760, 7168492, 8960615, 14336984, 17921230, 35842460, 71684920]

約数ペア:

[(1, 71684920), (2, 35842460), (4, 17921230), (5, 14336984), (8, 8960615), (10, 7168492), (17, 4216760), (20, 3584246), (34, 2108380), (40, 1792123), (68, 1054190), (85, 843352), (136, 527095), (170, 421676), (271, 264520), (340, 210838), (389, 184280), (542, 132260), (680, 105419), (778, 92140), (1084, 66130), (1355, 52904), (1556, 46070), (1945, 36856), (2168, 33065), (2710, 26452), (3112, 23035), (3890, 18428), (4607, 15560), (5420, 13226), (6613, 10840), (7780, 9214)]