20287860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1889}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 57153600

約数和(自身を除く): 36865740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 179, 358, 537, 716, 895, 1074, 1790, 1889, 2148, 2685, 3580, 3778, 5370, 5667, 7556, 9445, 10740, 11334, 18890, 22668, 28335, 37780, 56670, 113340, 338131, 676262, 1014393, 1352524, 1690655, 2028786, 3381310, 4057572, 5071965, 6762620, 10143930, 20287860]

約数ペア:

[(1, 20287860), (2, 10143930), (3, 6762620), (4, 5071965), (5, 4057572), (6, 3381310), (10, 2028786), (12, 1690655), (15, 1352524), (20, 1014393), (30, 676262), (60, 338131), (179, 113340), (358, 56670), (537, 37780), (716, 28335), (895, 22668), (1074, 18890), (1790, 11334), (1889, 10740), (2148, 9445), (2685, 7556), (3580, 5667), (3778, 5370)]