31706480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{709}}^1$

素因数の和:778

約数の個数: 80

約数和(自身を含む): 81348960

約数和(自身を除く): 49642480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 709, 860, 1040, 1118, 1418, 1720, 2236, 2795, 2836, 3440, 3545, 4472, 5590, 5672, 7090, 8944, 9217, 11180, 11344, 14180, 18434, 22360, 28360, 30487, 36868, 44720, 46085, 56720, 60974, 73736, 92170, 121948, 147472, 152435, 184340, 243896, 304870, 368680, 396331, 487792, 609740, 737360, 792662, 1219480, 1585324, 1981655, 2438960, 3170648, 3963310, 6341296, 7926620, 15853240, 31706480]

約数ペア:

[(1, 31706480), (2, 15853240), (4, 7926620), (5, 6341296), (8, 3963310), (10, 3170648), (13, 2438960), (16, 1981655), (20, 1585324), (26, 1219480), (40, 792662), (43, 737360), (52, 609740), (65, 487792), (80, 396331), (86, 368680), (104, 304870), (130, 243896), (172, 184340), (208, 152435), (215, 147472), (260, 121948), (344, 92170), (430, 73736), (520, 60974), (559, 56720), (688, 46085), (709, 44720), (860, 36868), (1040, 30487), (1118, 28360), (1418, 22360), (1720, 18434), (2236, 14180), (2795, 11344), (2836, 11180), (3440, 9217), (3545, 8944), (4472, 7090), (5590, 5672)]