20545590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{379}}^1$

素因数の和:541

約数の個数: 64

約数和(自身を含む): 53625600

約数和(自身を除く): 33080010

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 139, 195, 278, 379, 390, 417, 695, 758, 834, 1137, 1390, 1807, 1895, 2085, 2274, 3614, 3790, 4170, 4927, 5421, 5685, 9035, 9854, 10842, 11370, 14781, 18070, 24635, 27105, 29562, 49270, 52681, 54210, 73905, 105362, 147810, 158043, 263405, 316086, 526810, 684853, 790215, 1369706, 1580430, 2054559, 3424265, 4109118, 6848530, 10272795, 20545590]

約数ペア:

[(1, 20545590), (2, 10272795), (3, 6848530), (5, 4109118), (6, 3424265), (10, 2054559), (13, 1580430), (15, 1369706), (26, 790215), (30, 684853), (39, 526810), (65, 316086), (78, 263405), (130, 158043), (139, 147810), (195, 105362), (278, 73905), (379, 54210), (390, 52681), (417, 49270), (695, 29562), (758, 27105), (834, 24635), (1137, 18070), (1390, 14781), (1807, 11370), (1895, 10842), (2085, 9854), (2274, 9035), (3614, 5685), (3790, 5421), (4170, 4927)]