217871220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{518741}}^1$

素因数の和:518760

約数の個数: 48

約数和(自身を含む): 697189248

約数和(自身を除く): 479318028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 518741, 1037482, 1556223, 2074964, 2593705, 3112446, 3631187, 5187410, 6224892, 7262374, 7781115, 10374820, 10893561, 14524748, 15562230, 18155935, 21787122, 31124460, 36311870, 43574244, 54467805, 72623740, 108935610, 217871220]

約数ペア:

[(1, 217871220), (2, 108935610), (3, 72623740), (4, 54467805), (5, 43574244), (6, 36311870), (7, 31124460), (10, 21787122), (12, 18155935), (14, 15562230), (15, 14524748), (20, 10893561), (21, 10374820), (28, 7781115), (30, 7262374), (35, 6224892), (42, 5187410), (60, 3631187), (70, 3112446), (84, 2593705), (105, 2074964), (140, 1556223), (210, 1037482), (420, 518741)]