21403035

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1229}}^1$

素因数の和:1289

約数の個数: 40

約数和(自身を含む): 39291120

約数和(自身を除く): 17888085

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 387, 405, 645, 1161, 1229, 1935, 3483, 3687, 5805, 6145, 11061, 17415, 18435, 33183, 52847, 55305, 99549, 158541, 165915, 264235, 475623, 497745, 792705, 1426869, 2378115, 4280607, 7134345, 21403035]

約数ペア:

[(1, 21403035), (3, 7134345), (5, 4280607), (9, 2378115), (15, 1426869), (27, 792705), (43, 497745), (45, 475623), (81, 264235), (129, 165915), (135, 158541), (215, 99549), (387, 55305), (405, 52847), (645, 33183), (1161, 18435), (1229, 17415), (1935, 11061), (3483, 6145), (3687, 5805)]