20464020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4943}}^1$

素因数の和:4981

約数の個数: 72

約数和(自身を含む): 64786176

約数和(自身を除く): 44322156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4943, 9886, 14829, 19772, 24715, 29658, 44487, 49430, 59316, 74145, 88974, 98860, 113689, 148290, 177948, 222435, 227378, 296580, 341067, 444870, 454756, 568445, 682134, 889740, 1023201, 1136890, 1364268, 1705335, 2046402, 2273780, 3410670, 4092804, 5116005, 6821340, 10232010, 20464020]

約数ペア:

[(1, 20464020), (2, 10232010), (3, 6821340), (4, 5116005), (5, 4092804), (6, 3410670), (9, 2273780), (10, 2046402), (12, 1705335), (15, 1364268), (18, 1136890), (20, 1023201), (23, 889740), (30, 682134), (36, 568445), (45, 454756), (46, 444870), (60, 341067), (69, 296580), (90, 227378), (92, 222435), (115, 177948), (138, 148290), (180, 113689), (207, 98860), (230, 88974), (276, 74145), (345, 59316), (414, 49430), (460, 44487), (690, 29658), (828, 24715), (1035, 19772), (1380, 14829), (2070, 9886), (4140, 4943)]