21259175

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 32140800

約数和(自身を除く): 10881625

約数列:

[1, 5, 7, 25, 29, 35, 59, 71, 145, 175, 203, 295, 355, 413, 497, 725, 1015, 1475, 1711, 1775, 2059, 2065, 2485, 4189, 5075, 8555, 10295, 10325, 11977, 12425, 14413, 20945, 29323, 42775, 51475, 59885, 72065, 104725, 121481, 146615, 299425, 360325, 607405, 733075, 850367, 3037025, 4251835, 21259175]

約数ペア:

[(1, 21259175), (5, 4251835), (7, 3037025), (25, 850367), (29, 733075), (35, 607405), (59, 360325), (71, 299425), (145, 146615), (175, 121481), (203, 104725), (295, 72065), (355, 59885), (413, 51475), (497, 42775), (725, 29323), (1015, 20945), (1475, 14413), (1711, 12425), (1775, 11977), (2059, 10325), (2065, 10295), (2485, 8555), (4189, 5075)]