16990480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:105

約数の個数: 120

約数和(自身を含む): 46543896

約数和(自身を除く): 29553416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 31, 34, 40, 52, 62, 65, 68, 80, 85, 104, 124, 130, 136, 155, 170, 208, 221, 248, 260, 272, 310, 340, 403, 442, 496, 520, 527, 620, 680, 806, 884, 961, 1040, 1054, 1105, 1240, 1360, 1612, 1768, 1922, 2015, 2108, 2210, 2480, 2635, 3224, 3536, 3844, 4030, 4216, 4420, 4805, 5270, 6448, 6851, 7688, 8060, 8432, 8840, 9610, 10540, 12493, 13702, 15376, 16120, 16337, 17680, 19220, 21080, 24986, 27404, 32240, 32674, 34255, 38440, 42160, 49972, 54808, 62465, 65348, 68510, 76880, 81685, 99944, 109616, 124930, 130696, 137020, 163370, 199888, 212381, 249860, 261392, 274040, 326740, 424762, 499720, 548080, 653480, 849524, 999440, 1061905, 1306960, 1699048, 2123810, 3398096, 4247620, 8495240, 16990480]

約数ペア:

[(1, 16990480), (2, 8495240), (4, 4247620), (5, 3398096), (8, 2123810), (10, 1699048), (13, 1306960), (16, 1061905), (17, 999440), (20, 849524), (26, 653480), (31, 548080), (34, 499720), (40, 424762), (52, 326740), (62, 274040), (65, 261392), (68, 249860), (80, 212381), (85, 199888), (104, 163370), (124, 137020), (130, 130696), (136, 124930), (155, 109616), (170, 99944), (208, 81685), (221, 76880), (248, 68510), (260, 65348), (272, 62465), (310, 54808), (340, 49972), (403, 42160), (442, 38440), (496, 34255), (520, 32674), (527, 32240), (620, 27404), (680, 24986), (806, 21080), (884, 19220), (961, 17680), (1040, 16337), (1054, 16120), (1105, 15376), (1240, 13702), (1360, 12493), (1612, 10540), (1768, 9610), (1922, 8840), (2015, 8432), (2108, 8060), (2210, 7688), (2480, 6851), (2635, 6448), (3224, 5270), (3536, 4805), (3844, 4420), (4030, 4216)]