20843325

素因数分解:

$3^5\times 5^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 40080768

約数和(自身を除く): 19237443

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 73, 75, 81, 135, 141, 219, 225, 235, 243, 365, 405, 423, 657, 675, 705, 1095, 1175, 1215, 1269, 1825, 1971, 2025, 2115, 3285, 3431, 3525, 3807, 5475, 5913, 6075, 6345, 9855, 10293, 10575, 11421, 16425, 17155, 17739, 19035, 29565, 30879, 31725, 49275, 51465, 57105, 85775, 88695, 92637, 95175, 147825, 154395, 257325, 277911, 285525, 443475, 463185, 771975, 833733, 1389555, 2315925, 4168665, 6947775, 20843325]

約数ペア:

[(1, 20843325), (3, 6947775), (5, 4168665), (9, 2315925), (15, 1389555), (25, 833733), (27, 771975), (45, 463185), (47, 443475), (73, 285525), (75, 277911), (81, 257325), (135, 154395), (141, 147825), (219, 95175), (225, 92637), (235, 88695), (243, 85775), (365, 57105), (405, 51465), (423, 49275), (657, 31725), (675, 30879), (705, 29565), (1095, 19035), (1175, 17739), (1215, 17155), (1269, 16425), (1825, 11421), (1971, 10575), (2025, 10293), (2115, 9855), (3285, 6345), (3431, 6075), (3525, 5913), (3807, 5475)]