21211440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2851}}^1$

素因数の和:2898

約数の個数: 80

約数和(自身を含む): 67900416

約数和(自身を除く): 46688976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2851, 3720, 5702, 7440, 8553, 11404, 14255, 17106, 22808, 28510, 34212, 42765, 45616, 57020, 68424, 85530, 88381, 114040, 136848, 171060, 176762, 228080, 265143, 342120, 353524, 441905, 530286, 684240, 707048, 883810, 1060572, 1325715, 1414096, 1767620, 2121144, 2651430, 3535240, 4242288, 5302860, 7070480, 10605720, 21211440]

約数ペア:

[(1, 21211440), (2, 10605720), (3, 7070480), (4, 5302860), (5, 4242288), (6, 3535240), (8, 2651430), (10, 2121144), (12, 1767620), (15, 1414096), (16, 1325715), (20, 1060572), (24, 883810), (30, 707048), (31, 684240), (40, 530286), (48, 441905), (60, 353524), (62, 342120), (80, 265143), (93, 228080), (120, 176762), (124, 171060), (155, 136848), (186, 114040), (240, 88381), (248, 85530), (310, 68424), (372, 57020), (465, 45616), (496, 42765), (620, 34212), (744, 28510), (930, 22808), (1240, 17106), (1488, 14255), (1860, 11404), (2480, 8553), (2851, 7440), (3720, 5702)]