399910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:240

約数の個数: 32

約数和(自身を含む): 855360

約数和(自身を除く): 455450

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 197, 203, 290, 394, 406, 985, 1015, 1379, 1970, 2030, 2758, 5713, 6895, 11426, 13790, 28565, 39991, 57130, 79982, 199955, 399910]

約数ペア:

[(1, 399910), (2, 199955), (5, 79982), (7, 57130), (10, 39991), (14, 28565), (29, 13790), (35, 11426), (58, 6895), (70, 5713), (145, 2758), (197, 2030), (203, 1970), (290, 1379), (394, 1015), (406, 985)]