68624140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 158639040

約数和(自身を除く): 90014900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 257, 260, 316, 338, 395, 514, 676, 790, 845, 1027, 1028, 1285, 1580, 1690, 2054, 2570, 3341, 3380, 4108, 5135, 5140, 6682, 10270, 13351, 13364, 16705, 20303, 20540, 26702, 33410, 40606, 43433, 53404, 66755, 66820, 81212, 86866, 101515, 133510, 173732, 203030, 217165, 263939, 267020, 406060, 434330, 527878, 868660, 1055756, 1319695, 2639390, 3431207, 5278780, 6862414, 13724828, 17156035, 34312070, 68624140]

約数ペア:

[(1, 68624140), (2, 34312070), (4, 17156035), (5, 13724828), (10, 6862414), (13, 5278780), (20, 3431207), (26, 2639390), (52, 1319695), (65, 1055756), (79, 868660), (130, 527878), (158, 434330), (169, 406060), (257, 267020), (260, 263939), (316, 217165), (338, 203030), (395, 173732), (514, 133510), (676, 101515), (790, 86866), (845, 81212), (1027, 66820), (1028, 66755), (1285, 53404), (1580, 43433), (1690, 40606), (2054, 33410), (2570, 26702), (3341, 20540), (3380, 20303), (4108, 16705), (5135, 13364), (5140, 13351), (6682, 10270)]