21672825

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 38449920

約数和(自身を除く): 16777095

約数列:

[1, 3, 5, 15, 19, 25, 57, 67, 75, 95, 201, 227, 285, 335, 475, 681, 1005, 1135, 1273, 1425, 1675, 3405, 3819, 4313, 5025, 5675, 6365, 12939, 15209, 17025, 19095, 21565, 31825, 45627, 64695, 76045, 95475, 107825, 228135, 288971, 323475, 380225, 866913, 1140675, 1444855, 4334565, 7224275, 21672825]

約数ペア:

[(1, 21672825), (3, 7224275), (5, 4334565), (15, 1444855), (19, 1140675), (25, 866913), (57, 380225), (67, 323475), (75, 288971), (95, 228135), (201, 107825), (227, 95475), (285, 76045), (335, 64695), (475, 45627), (681, 31825), (1005, 21565), (1135, 19095), (1273, 17025), (1425, 15209), (1675, 12939), (3405, 6365), (3819, 5675), (4313, 5025)]