280090880

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1723}}^1$

素因数の和:1871

約数の個数: 72

約数和(自身を含む): 676580352

約数和(自身を除く): 396489472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 635, 640, 1016, 1270, 1280, 1723, 2032, 2540, 3446, 4064, 5080, 6892, 8128, 8615, 10160, 13784, 16256, 17230, 20320, 27568, 32512, 34460, 40640, 55136, 68920, 81280, 110272, 137840, 162560, 218821, 220544, 275680, 437642, 441088, 551360, 875284, 1094105, 1102720, 1750568, 2188210, 2205440, 3501136, 4376420, 7002272, 8752840, 14004544, 17505680, 28009088, 35011360, 56018176, 70022720, 140045440, 280090880]

約数ペア:

[(1, 280090880), (2, 140045440), (4, 70022720), (5, 56018176), (8, 35011360), (10, 28009088), (16, 17505680), (20, 14004544), (32, 8752840), (40, 7002272), (64, 4376420), (80, 3501136), (127, 2205440), (128, 2188210), (160, 1750568), (254, 1102720), (256, 1094105), (320, 875284), (508, 551360), (635, 441088), (640, 437642), (1016, 275680), (1270, 220544), (1280, 218821), (1723, 162560), (2032, 137840), (2540, 110272), (3446, 81280), (4064, 68920), (5080, 55136), (6892, 40640), (8128, 34460), (8615, 32512), (10160, 27568), (13784, 20320), (16256, 17230)]