21863775

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{229}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 38787200

約数和(自身を除く): 16923425

約数列:

[1, 3, 5, 15, 19, 25, 57, 67, 75, 95, 201, 229, 285, 335, 475, 687, 1005, 1145, 1273, 1425, 1675, 3435, 3819, 4351, 5025, 5725, 6365, 13053, 15343, 17175, 19095, 21755, 31825, 46029, 65265, 76715, 95475, 108775, 230145, 291517, 326325, 383575, 874551, 1150725, 1457585, 4372755, 7287925, 21863775]

約数ペア:

[(1, 21863775), (3, 7287925), (5, 4372755), (15, 1457585), (19, 1150725), (25, 874551), (57, 383575), (67, 326325), (75, 291517), (95, 230145), (201, 108775), (229, 95475), (285, 76715), (335, 65265), (475, 46029), (687, 31825), (1005, 21755), (1145, 19095), (1273, 17175), (1425, 15343), (1675, 13053), (3435, 6365), (3819, 5725), (4351, 5025)]