20879700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{881}}^1$

素因数の和:977

約数の個数: 72

約数和(自身を含む): 61246080

約数和(自身を除く): 40366380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 79, 100, 150, 158, 237, 300, 316, 395, 474, 790, 881, 948, 1185, 1580, 1762, 1975, 2370, 2643, 3524, 3950, 4405, 4740, 5286, 5925, 7900, 8810, 10572, 11850, 13215, 17620, 22025, 23700, 26430, 44050, 52860, 66075, 69599, 88100, 132150, 139198, 208797, 264300, 278396, 347995, 417594, 695990, 835188, 1043985, 1391980, 1739975, 2087970, 3479950, 4175940, 5219925, 6959900, 10439850, 20879700]

約数ペア:

[(1, 20879700), (2, 10439850), (3, 6959900), (4, 5219925), (5, 4175940), (6, 3479950), (10, 2087970), (12, 1739975), (15, 1391980), (20, 1043985), (25, 835188), (30, 695990), (50, 417594), (60, 347995), (75, 278396), (79, 264300), (100, 208797), (150, 139198), (158, 132150), (237, 88100), (300, 69599), (316, 66075), (395, 52860), (474, 44050), (790, 26430), (881, 23700), (948, 22025), (1185, 17620), (1580, 13215), (1762, 11850), (1975, 10572), (2370, 8810), (2643, 7900), (3524, 5925), (3950, 5286), (4405, 4740)]