21149750

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{2729}}^1$

素因数の和:2777

約数の個数: 32

約数和(自身を含む): 40884480

約数和(自身を除く): 19734730

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 775, 1550, 2729, 3875, 5458, 7750, 13645, 27290, 68225, 84599, 136450, 169198, 341125, 422995, 682250, 845990, 2114975, 4229950, 10574875, 21149750]

約数ペア:

[(1, 21149750), (2, 10574875), (5, 4229950), (10, 2114975), (25, 845990), (31, 682250), (50, 422995), (62, 341125), (125, 169198), (155, 136450), (250, 84599), (310, 68225), (775, 27290), (1550, 13645), (2729, 7750), (3875, 5458)]