81489720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52237}}^1$

素因数の和:52264

約数の個数: 64

約数和(自身を含む): 263279520

約数和(自身を除く): 181789800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 52237, 104474, 156711, 208948, 261185, 313422, 417896, 522370, 626844, 679081, 783555, 1044740, 1253688, 1358162, 1567110, 2037243, 2089480, 2716324, 3134220, 3395405, 4074486, 5432648, 6268440, 6790810, 8148972, 10186215, 13581620, 16297944, 20372430, 27163240, 40744860, 81489720]

約数ペア:

[(1, 81489720), (2, 40744860), (3, 27163240), (4, 20372430), (5, 16297944), (6, 13581620), (8, 10186215), (10, 8148972), (12, 6790810), (13, 6268440), (15, 5432648), (20, 4074486), (24, 3395405), (26, 3134220), (30, 2716324), (39, 2089480), (40, 2037243), (52, 1567110), (60, 1358162), (65, 1253688), (78, 1044740), (104, 783555), (120, 679081), (130, 626844), (156, 522370), (195, 417896), (260, 313422), (312, 261185), (390, 208948), (520, 156711), (780, 104474), (1560, 52237)]