418740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{997}}^1$

素因数の和:1016

約数の個数: 48

約数和(自身を含む): 1341312

約数和(自身を除く): 922572

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, 997, 1994, 2991, 3988, 4985, 5982, 6979, 9970, 11964, 13958, 14955, 19940, 20937, 27916, 29910, 34895, 41874, 59820, 69790, 83748, 104685, 139580, 209370, 418740]

約数ペア:

[(1, 418740), (2, 209370), (3, 139580), (4, 104685), (5, 83748), (6, 69790), (7, 59820), (10, 41874), (12, 34895), (14, 29910), (15, 27916), (20, 20937), (21, 19940), (28, 14955), (30, 13958), (35, 11964), (42, 9970), (60, 6979), (70, 5982), (84, 4985), (105, 3988), (140, 2991), (210, 1994), (420, 997)]