28389440

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1123}}^1$

素因数の和:1219

約数の個数: 56

約数和(自身を含む): 68519040

約数和(自身を除く): 40129600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1123, 1264, 1580, 2246, 2528, 3160, 4492, 5056, 5615, 6320, 8984, 11230, 12640, 17968, 22460, 25280, 35936, 44920, 71872, 88717, 89840, 177434, 179680, 354868, 359360, 443585, 709736, 887170, 1419472, 1774340, 2838944, 3548680, 5677888, 7097360, 14194720, 28389440]

約数ペア:

[(1, 28389440), (2, 14194720), (4, 7097360), (5, 5677888), (8, 3548680), (10, 2838944), (16, 1774340), (20, 1419472), (32, 887170), (40, 709736), (64, 443585), (79, 359360), (80, 354868), (158, 179680), (160, 177434), (316, 89840), (320, 88717), (395, 71872), (632, 44920), (790, 35936), (1123, 25280), (1264, 22460), (1580, 17968), (2246, 12640), (2528, 11230), (3160, 8984), (4492, 6320), (5056, 5615)]