399778868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{74419}}^1$

素因数の和:74519

約数の個数: 24

約数和(自身を含む): 750153600

約数和(自身を除く): 350374732

約数列:

[1, 2, 4, 17, 34, 68, 79, 158, 316, 1343, 2686, 5372, 74419, 148838, 297676, 1265123, 2530246, 5060492, 5879101, 11758202, 23516404, 99944717, 199889434, 399778868]

約数ペア:

[(1, 399778868), (2, 199889434), (4, 99944717), (17, 23516404), (34, 11758202), (68, 5879101), (79, 5060492), (158, 2530246), (316, 1265123), (1343, 297676), (2686, 148838), (5372, 74419)]