21744020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2063}}^1$

素因数の和:2120

約数の個数: 48

約数和(自身を含む): 49932288

約数和(自身を除く): 28188268

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 2063, 2108, 2635, 4126, 5270, 8252, 10315, 10540, 20630, 35071, 41260, 63953, 70142, 127906, 140284, 175355, 255812, 319765, 350710, 639530, 701420, 1087201, 1279060, 2174402, 4348804, 5436005, 10872010, 21744020]

約数ペア:

[(1, 21744020), (2, 10872010), (4, 5436005), (5, 4348804), (10, 2174402), (17, 1279060), (20, 1087201), (31, 701420), (34, 639530), (62, 350710), (68, 319765), (85, 255812), (124, 175355), (155, 140284), (170, 127906), (310, 70142), (340, 63953), (527, 41260), (620, 35071), (1054, 20630), (2063, 10540), (2108, 10315), (2635, 8252), (4126, 5270)]