70181820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20521}}^1$

素因数の和:20555

約数の個数: 72

約数和(自身を含む): 224100240

約数和(自身を除く): 153918420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 20521, 41042, 61563, 82084, 102605, 123126, 184689, 205210, 246252, 307815, 369378, 389899, 410420, 615630, 738756, 779798, 923445, 1169697, 1231260, 1559596, 1846890, 1949495, 2339394, 3509091, 3693780, 3898990, 4678788, 5848485, 7018182, 7797980, 11696970, 14036364, 17545455, 23393940, 35090910, 70181820]

約数ペア:

[(1, 70181820), (2, 35090910), (3, 23393940), (4, 17545455), (5, 14036364), (6, 11696970), (9, 7797980), (10, 7018182), (12, 5848485), (15, 4678788), (18, 3898990), (19, 3693780), (20, 3509091), (30, 2339394), (36, 1949495), (38, 1846890), (45, 1559596), (57, 1231260), (60, 1169697), (76, 923445), (90, 779798), (95, 738756), (114, 615630), (171, 410420), (180, 389899), (190, 369378), (228, 307815), (285, 246252), (342, 205210), (380, 184689), (570, 123126), (684, 102605), (855, 82084), (1140, 61563), (1710, 41042), (3420, 20521)]