21000314625

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1559}}^1\times {\mathrm{2113}}^1$

素因数の和:3707

約数の個数: 64

約数和(自身を含む): 37041338880

約数和(自身を除く): 16041024255

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 1275, 1559, 2113, 2125, 4677, 6339, 6375, 7795, 10565, 23385, 26503, 31695, 35921, 38975, 52825, 79509, 107763, 116925, 132515, 158475, 179605, 194875, 264125, 397545, 538815, 584625, 662575, 792375, 898025, 1987725, 2694075, 3294167, 3312875, 4490125, 9882501, 9938625, 13470375, 16470835, 49412505, 56000839, 82354175, 168002517, 247062525, 280004195, 411770875, 840012585, 1235312625, 1400020975, 4200062925, 7000104875, 21000314625]

約数ペア:

[(1, 21000314625), (3, 7000104875), (5, 4200062925), (15, 1400020975), (17, 1235312625), (25, 840012585), (51, 411770875), (75, 280004195), (85, 247062525), (125, 168002517), (255, 82354175), (375, 56000839), (425, 49412505), (1275, 16470835), (1559, 13470375), (2113, 9938625), (2125, 9882501), (4677, 4490125), (6339, 3312875), (6375, 3294167), (7795, 2694075), (10565, 1987725), (23385, 898025), (26503, 792375), (31695, 662575), (35921, 584625), (38975, 538815), (52825, 397545), (79509, 264125), (107763, 194875), (116925, 179605), (132515, 158475)]