28870760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{42457}}^1$

素因数の和:42485

約数の個数: 32

約数和(自身を含む): 68781960

約数和(自身を除く): 39911200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 42457, 84914, 169828, 212285, 339656, 424570, 721769, 849140, 1443538, 1698280, 2887076, 3608845, 5774152, 7217690, 14435380, 28870760]

約数ペア:

[(1, 28870760), (2, 14435380), (4, 7217690), (5, 5774152), (8, 3608845), (10, 2887076), (17, 1698280), (20, 1443538), (34, 849140), (40, 721769), (68, 424570), (85, 339656), (136, 212285), (170, 169828), (340, 84914), (680, 42457)]