20748390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53201}}^1$

素因数の和:53224

約数の個数: 32

約数和(自身を含む): 53627616

約数和(自身を除く): 32879226

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53201, 106402, 159603, 266005, 319206, 532010, 691613, 798015, 1383226, 1596030, 2074839, 3458065, 4149678, 6916130, 10374195, 20748390]

約数ペア:

[(1, 20748390), (2, 10374195), (3, 6916130), (5, 4149678), (6, 3458065), (10, 2074839), (13, 1596030), (15, 1383226), (26, 798015), (30, 691613), (39, 532010), (65, 319206), (78, 266005), (130, 159603), (195, 106402), (390, 53201)]