20847500

素因数分解:

$2^2\times 5^4\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:324

約数の個数: 60

約数和(自身を含む): 47234880

約数和(自身を除く): 26387380

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 269, 310, 500, 538, 620, 625, 775, 1076, 1250, 1345, 1550, 2500, 2690, 3100, 3875, 5380, 6725, 7750, 8339, 13450, 15500, 16678, 19375, 26900, 33356, 33625, 38750, 41695, 67250, 77500, 83390, 134500, 166780, 168125, 208475, 336250, 416950, 672500, 833900, 1042375, 2084750, 4169500, 5211875, 10423750, 20847500]

約数ペア:

[(1, 20847500), (2, 10423750), (4, 5211875), (5, 4169500), (10, 2084750), (20, 1042375), (25, 833900), (31, 672500), (50, 416950), (62, 336250), (100, 208475), (124, 168125), (125, 166780), (155, 134500), (250, 83390), (269, 77500), (310, 67250), (500, 41695), (538, 38750), (620, 33625), (625, 33356), (775, 26900), (1076, 19375), (1250, 16678), (1345, 15500), (1550, 13450), (2500, 8339), (2690, 7750), (3100, 6725), (3875, 5380)]