20812125

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 38338560

約数和(自身を除く): 17526435

約数列:

[1, 3, 5, 15, 19, 23, 25, 57, 69, 75, 95, 115, 125, 127, 285, 345, 375, 381, 437, 475, 575, 635, 1311, 1425, 1725, 1905, 2185, 2375, 2413, 2875, 2921, 3175, 6555, 7125, 7239, 8625, 8763, 9525, 10925, 12065, 14605, 15875, 32775, 36195, 43815, 47625, 54625, 55499, 60325, 73025, 163875, 166497, 180975, 219075, 277495, 301625, 365125, 832485, 904875, 1095375, 1387475, 4162425, 6937375, 20812125]

約数ペア:

[(1, 20812125), (3, 6937375), (5, 4162425), (15, 1387475), (19, 1095375), (23, 904875), (25, 832485), (57, 365125), (69, 301625), (75, 277495), (95, 219075), (115, 180975), (125, 166497), (127, 163875), (285, 73025), (345, 60325), (375, 55499), (381, 54625), (437, 47625), (475, 43815), (575, 36195), (635, 32775), (1311, 15875), (1425, 14605), (1725, 12065), (1905, 10925), (2185, 9525), (2375, 8763), (2413, 8625), (2875, 7239), (2921, 7125), (3175, 6555)]