8398740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19997}}^1$

素因数の和:20016

約数の個数: 48

約数和(自身を含む): 26877312

約数和(自身を除く): 18478572

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, 19997, 39994, 59991, 79988, 99985, 119982, 139979, 199970, 239964, 279958, 299955, 399940, 419937, 559916, 599910, 699895, 839874, 1199820, 1399790, 1679748, 2099685, 2799580, 4199370, 8398740]

約数ペア:

[(1, 8398740), (2, 4199370), (3, 2799580), (4, 2099685), (5, 1679748), (6, 1399790), (7, 1199820), (10, 839874), (12, 699895), (14, 599910), (15, 559916), (20, 419937), (21, 399940), (28, 299955), (30, 279958), (35, 239964), (42, 199970), (60, 139979), (70, 119982), (84, 99985), (105, 79988), (140, 59991), (210, 39994), (420, 19997)]