129808580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{431}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 306343296

約数和(自身を除く): 176534716

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 431, 740, 814, 862, 1369, 1628, 1724, 2035, 2155, 2738, 4070, 4310, 4741, 5476, 6845, 8140, 8620, 9482, 13690, 15059, 15947, 18964, 23705, 27380, 30118, 31894, 47410, 60236, 63788, 75295, 79735, 94820, 150590, 159470, 175417, 301180, 318940, 350834, 590039, 701668, 877085, 1180078, 1754170, 2360156, 2950195, 3508340, 5900390, 6490429, 11800780, 12980858, 25961716, 32452145, 64904290, 129808580]

約数ペア:

[(1, 129808580), (2, 64904290), (4, 32452145), (5, 25961716), (10, 12980858), (11, 11800780), (20, 6490429), (22, 5900390), (37, 3508340), (44, 2950195), (55, 2360156), (74, 1754170), (110, 1180078), (148, 877085), (185, 701668), (220, 590039), (370, 350834), (407, 318940), (431, 301180), (740, 175417), (814, 159470), (862, 150590), (1369, 94820), (1628, 79735), (1724, 75295), (2035, 63788), (2155, 60236), (2738, 47410), (4070, 31894), (4310, 30118), (4741, 27380), (5476, 23705), (6845, 18964), (8140, 15947), (8620, 15059), (9482, 13690)]