138915760

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:782

約数の個数: 80

約数和(自身を含む): 336889152

約数和(自身を除く): 197973392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 142, 148, 185, 284, 296, 355, 370, 568, 592, 661, 710, 740, 1136, 1322, 1420, 1480, 2627, 2644, 2840, 2960, 3305, 5254, 5288, 5680, 6610, 10508, 10576, 13135, 13220, 21016, 24457, 26270, 26440, 42032, 46931, 48914, 52540, 52880, 93862, 97828, 105080, 122285, 187724, 195656, 210160, 234655, 244570, 375448, 391312, 469310, 489140, 750896, 938620, 978280, 1736447, 1877240, 1956560, 3472894, 3754480, 6945788, 8682235, 13891576, 17364470, 27783152, 34728940, 69457880, 138915760]

約数ペア:

[(1, 138915760), (2, 69457880), (4, 34728940), (5, 27783152), (8, 17364470), (10, 13891576), (16, 8682235), (20, 6945788), (37, 3754480), (40, 3472894), (71, 1956560), (74, 1877240), (80, 1736447), (142, 978280), (148, 938620), (185, 750896), (284, 489140), (296, 469310), (355, 391312), (370, 375448), (568, 244570), (592, 234655), (661, 210160), (710, 195656), (740, 187724), (1136, 122285), (1322, 105080), (1420, 97828), (1480, 93862), (2627, 52880), (2644, 52540), (2840, 48914), (2960, 46931), (3305, 42032), (5254, 26440), (5288, 26270), (5680, 24457), (6610, 21016), (10508, 13220), (10576, 13135)]