20001590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23544010

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 59, 70, 118, 145, 167, 203, 290, 295, 334, 406, 413, 590, 826, 835, 1015, 1169, 1670, 1711, 2030, 2065, 2338, 3422, 4130, 4843, 5845, 8555, 9686, 9853, 11690, 11977, 17110, 19706, 23954, 24215, 33901, 48430, 49265, 59885, 67802, 68971, 98530, 119770, 137942, 169505, 285737, 339010, 344855, 571474, 689710, 1428685, 2000159, 2857370, 4000318, 10000795, 20001590]

約数ペア:

[(1, 20001590), (2, 10000795), (5, 4000318), (7, 2857370), (10, 2000159), (14, 1428685), (29, 689710), (35, 571474), (58, 344855), (59, 339010), (70, 285737), (118, 169505), (145, 137942), (167, 119770), (203, 98530), (290, 68971), (295, 67802), (334, 59885), (406, 49265), (413, 48430), (590, 33901), (826, 24215), (835, 23954), (1015, 19706), (1169, 17110), (1670, 11977), (1711, 11690), (2030, 9853), (2065, 9686), (2338, 8555), (3422, 5845), (4130, 4843)]