28881640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{42473}}^1$

素因数の和:42501

約数の個数: 32

約数和(自身を含む): 68807880

約数和(自身を除く): 39926240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 42473, 84946, 169892, 212365, 339784, 424730, 722041, 849460, 1444082, 1698920, 2888164, 3610205, 5776328, 7220410, 14440820, 28881640]

約数ペア:

[(1, 28881640), (2, 14440820), (4, 7220410), (5, 5776328), (8, 3610205), (10, 2888164), (17, 1698920), (20, 1444082), (34, 849460), (40, 722041), (68, 424730), (85, 339784), (136, 212365), (170, 169892), (340, 84946), (680, 42473)]