289589620

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{1321}}^1$

素因数の和:1540

約数の個数: 48

約数和(自身を含む): 620314128

約数和(自身を除く): 330724508

約数列:

[1, 2, 4, 5, 10, 20, 97, 113, 194, 226, 388, 452, 485, 565, 970, 1130, 1321, 1940, 2260, 2642, 5284, 6605, 10961, 13210, 21922, 26420, 43844, 54805, 109610, 128137, 149273, 219220, 256274, 298546, 512548, 597092, 640685, 746365, 1281370, 1492730, 2562740, 2985460, 14479481, 28958962, 57917924, 72397405, 144794810, 289589620]

約数ペア:

[(1, 289589620), (2, 144794810), (4, 72397405), (5, 57917924), (10, 28958962), (20, 14479481), (97, 2985460), (113, 2562740), (194, 1492730), (226, 1281370), (388, 746365), (452, 640685), (485, 597092), (565, 512548), (970, 298546), (1130, 256274), (1321, 219220), (1940, 149273), (2260, 128137), (2642, 109610), (5284, 54805), (6605, 43844), (10961, 26420), (13210, 21922)]