21851375

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 35852544

約数和(自身を除く): 14001169

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 113, 119, 125, 175, 221, 325, 425, 455, 565, 595, 791, 875, 1105, 1469, 1547, 1625, 1921, 2125, 2275, 2825, 2975, 3955, 5525, 7345, 7735, 9605, 10283, 11375, 13447, 14125, 14875, 19775, 24973, 27625, 36725, 38675, 48025, 51415, 67235, 98875, 124865, 174811, 183625, 193375, 240125, 257075, 336175, 624325, 874055, 1285375, 1680875, 3121625, 4370275, 21851375]

約数ペア:

[(1, 21851375), (5, 4370275), (7, 3121625), (13, 1680875), (17, 1285375), (25, 874055), (35, 624325), (65, 336175), (85, 257075), (91, 240125), (113, 193375), (119, 183625), (125, 174811), (175, 124865), (221, 98875), (325, 67235), (425, 51415), (455, 48025), (565, 38675), (595, 36725), (791, 27625), (875, 24973), (1105, 19775), (1469, 14875), (1547, 14125), (1625, 13447), (1921, 11375), (2125, 10283), (2275, 9605), (2825, 7735), (2975, 7345), (3955, 5525)]