20153475

素因数分解:

$3^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 37621600

約数和(自身を除く): 17468125

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 135, 219, 225, 365, 409, 657, 675, 1095, 1227, 1825, 1971, 2045, 3285, 3681, 5475, 6135, 9855, 10225, 11043, 16425, 18405, 29857, 30675, 49275, 55215, 89571, 92025, 149285, 268713, 276075, 447855, 746425, 806139, 1343565, 2239275, 4030695, 6717825, 20153475]

約数ペア:

[(1, 20153475), (3, 6717825), (5, 4030695), (9, 2239275), (15, 1343565), (25, 806139), (27, 746425), (45, 447855), (73, 276075), (75, 268713), (135, 149285), (219, 92025), (225, 89571), (365, 55215), (409, 49275), (657, 30675), (675, 29857), (1095, 18405), (1227, 16425), (1825, 11043), (1971, 10225), (2045, 9855), (3285, 6135), (3681, 5475)]