205317340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{197}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 458510976

約数和(自身を除く): 253193636

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 197, 205, 310, 394, 410, 620, 788, 820, 985, 1271, 1681, 1970, 2542, 3362, 3940, 5084, 6107, 6355, 6724, 8077, 8405, 12214, 12710, 16154, 16810, 24428, 25420, 30535, 32308, 33620, 40385, 52111, 61070, 80770, 104222, 122140, 161540, 208444, 250387, 260555, 331157, 500774, 521110, 662314, 1001548, 1042220, 1251935, 1324628, 1655785, 2503870, 3311570, 5007740, 6623140, 10265867, 20531734, 41063468, 51329335, 102658670, 205317340]

約数ペア:

[(1, 205317340), (2, 102658670), (4, 51329335), (5, 41063468), (10, 20531734), (20, 10265867), (31, 6623140), (41, 5007740), (62, 3311570), (82, 2503870), (124, 1655785), (155, 1324628), (164, 1251935), (197, 1042220), (205, 1001548), (310, 662314), (394, 521110), (410, 500774), (620, 331157), (788, 260555), (820, 250387), (985, 208444), (1271, 161540), (1681, 122140), (1970, 104222), (2542, 80770), (3362, 61070), (3940, 52111), (5084, 40385), (6107, 33620), (6355, 32308), (6724, 30535), (8077, 25420), (8405, 24428), (12214, 16810), (12710, 16154)]