20323750

素因数分解:

$2^1\times 5^4\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:322

約数の個数: 40

約数和(自身を含む): 38800080

約数和(自身を除く): 18476330

約数列:

[1, 2, 5, 10, 25, 50, 71, 125, 142, 229, 250, 355, 458, 625, 710, 1145, 1250, 1775, 2290, 3550, 5725, 8875, 11450, 16259, 17750, 28625, 32518, 44375, 57250, 81295, 88750, 143125, 162590, 286250, 406475, 812950, 2032375, 4064750, 10161875, 20323750]

約数ペア:

[(1, 20323750), (2, 10161875), (5, 4064750), (10, 2032375), (25, 812950), (50, 406475), (71, 286250), (125, 162590), (142, 143125), (229, 88750), (250, 81295), (355, 57250), (458, 44375), (625, 32518), (710, 28625), (1145, 17750), (1250, 16259), (1775, 11450), (2290, 8875), (3550, 5725)]