726792020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{17981}}^1$

素因数の和:18080

約数の個数: 48

約数和(自身を含む): 1595075328

約数和(自身を除く): 868283308

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 2021, 4042, 8084, 10105, 17981, 20210, 35962, 40420, 71924, 89905, 179810, 359620, 773183, 845107, 1546366, 1690214, 3092732, 3380428, 3865915, 4225535, 7731830, 8451070, 15463660, 16902140, 36339601, 72679202, 145358404, 181698005, 363396010, 726792020]

約数ペア:

[(1, 726792020), (2, 363396010), (4, 181698005), (5, 145358404), (10, 72679202), (20, 36339601), (43, 16902140), (47, 15463660), (86, 8451070), (94, 7731830), (172, 4225535), (188, 3865915), (215, 3380428), (235, 3092732), (430, 1690214), (470, 1546366), (860, 845107), (940, 773183), (2021, 359620), (4042, 179810), (8084, 89905), (10105, 71924), (17981, 40420), (20210, 35962)]