21853240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18839}}^1$

素因数の和:18879

約数の個数: 32

約数和(自身を含む): 50868000

約数和(自身を除く): 29014760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18839, 37678, 75356, 94195, 150712, 188390, 376780, 546331, 753560, 1092662, 2185324, 2731655, 4370648, 5463310, 10926620, 21853240]

約数ペア:

[(1, 21853240), (2, 10926620), (4, 5463310), (5, 4370648), (8, 2731655), (10, 2185324), (20, 1092662), (29, 753560), (40, 546331), (58, 376780), (116, 188390), (145, 150712), (232, 94195), (290, 75356), (580, 37678), (1160, 18839)]