68647840

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5431}}^1$

素因数の和:5525

約数の個数: 48

約数和(自身を含む): 164263680

約数和(自身を除く): 95615840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 2528, 3160, 5431, 6320, 10862, 12640, 21724, 27155, 43448, 54310, 86896, 108620, 173792, 217240, 429049, 434480, 858098, 868960, 1716196, 2145245, 3432392, 4290490, 6864784, 8580980, 13729568, 17161960, 34323920, 68647840]

約数ペア:

[(1, 68647840), (2, 34323920), (4, 17161960), (5, 13729568), (8, 8580980), (10, 6864784), (16, 4290490), (20, 3432392), (32, 2145245), (40, 1716196), (79, 868960), (80, 858098), (158, 434480), (160, 429049), (316, 217240), (395, 173792), (632, 108620), (790, 86896), (1264, 54310), (1580, 43448), (2528, 27155), (3160, 21724), (5431, 12640), (6320, 10862)]