39399980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67931}}^1$

素因数の和:67969

約数の個数: 24

約数和(自身を含む): 85594320

約数和(自身を除く): 46194340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 67931, 135862, 271724, 339655, 679310, 1358620, 1969999, 3939998, 7879996, 9849995, 19699990, 39399980]

約数ペア:

[(1, 39399980), (2, 19699990), (4, 9849995), (5, 7879996), (10, 3939998), (20, 1969999), (29, 1358620), (58, 679310), (116, 339655), (145, 271724), (290, 135862), (580, 67931)]