21040380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2851}}^1$

素因数の和:2907

約数の個数: 72

約数和(自身を含む): 65402064

約数和(自身を除く): 44361684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 369, 410, 492, 615, 738, 820, 1230, 1476, 1845, 2460, 2851, 3690, 5702, 7380, 8553, 11404, 14255, 17106, 25659, 28510, 34212, 42765, 51318, 57020, 85530, 102636, 116891, 128295, 171060, 233782, 256590, 350673, 467564, 513180, 584455, 701346, 1052019, 1168910, 1402692, 1753365, 2104038, 2337820, 3506730, 4208076, 5260095, 7013460, 10520190, 21040380]

約数ペア:

[(1, 21040380), (2, 10520190), (3, 7013460), (4, 5260095), (5, 4208076), (6, 3506730), (9, 2337820), (10, 2104038), (12, 1753365), (15, 1402692), (18, 1168910), (20, 1052019), (30, 701346), (36, 584455), (41, 513180), (45, 467564), (60, 350673), (82, 256590), (90, 233782), (123, 171060), (164, 128295), (180, 116891), (205, 102636), (246, 85530), (369, 57020), (410, 51318), (492, 42765), (615, 34212), (738, 28510), (820, 25659), (1230, 17106), (1476, 14255), (1845, 11404), (2460, 8553), (2851, 7380), (3690, 5702)]