1991210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:107

約数の個数: 48

約数和(自身を含む): 4177656

約数和(自身を除く): 2186446

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 53, 65, 85, 106, 130, 170, 221, 265, 289, 442, 530, 578, 689, 901, 1105, 1378, 1445, 1802, 2210, 2890, 3445, 3757, 4505, 6890, 7514, 9010, 11713, 15317, 18785, 23426, 30634, 37570, 58565, 76585, 117130, 153170, 199121, 398242, 995605, 1991210]

約数ペア:

[(1, 1991210), (2, 995605), (5, 398242), (10, 199121), (13, 153170), (17, 117130), (26, 76585), (34, 58565), (53, 37570), (65, 30634), (85, 23426), (106, 18785), (130, 15317), (170, 11713), (221, 9010), (265, 7514), (289, 6890), (442, 4505), (530, 3757), (578, 3445), (689, 2890), (901, 2210), (1105, 1802), (1378, 1445)]