388775270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{20071}}^1$

素因数の和:20240

約数の個数: 32

約数和(自身を含む): 758721600

約数和(自身を除く): 369946330

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149, 298, 745, 1490, 1937, 3874, 9685, 19370, 20071, 40142, 100355, 200710, 260923, 521846, 1304615, 2609230, 2990579, 5981158, 14952895, 29905790, 38877527, 77755054, 194387635, 388775270]

約数ペア:

[(1, 388775270), (2, 194387635), (5, 77755054), (10, 38877527), (13, 29905790), (26, 14952895), (65, 5981158), (130, 2990579), (149, 2609230), (298, 1304615), (745, 521846), (1490, 260923), (1937, 200710), (3874, 100355), (9685, 40142), (19370, 20071)]