21137350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1049}}^1$

素因数の和:1105

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 22609850

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1049, 1550, 2015, 2098, 4030, 5245, 10075, 10490, 13637, 20150, 26225, 27274, 32519, 52450, 65038, 68185, 136370, 162595, 325190, 340925, 422747, 681850, 812975, 845494, 1625950, 2113735, 4227470, 10568675, 21137350]

約数ペア:

[(1, 21137350), (2, 10568675), (5, 4227470), (10, 2113735), (13, 1625950), (25, 845494), (26, 812975), (31, 681850), (50, 422747), (62, 340925), (65, 325190), (130, 162595), (155, 136370), (310, 68185), (325, 65038), (403, 52450), (650, 32519), (775, 27274), (806, 26225), (1049, 20150), (1550, 13637), (2015, 10490), (2098, 10075), (4030, 5245)]