18512360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 43718400

約数和(自身を除く): 25206040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 188, 215, 229, 235, 344, 376, 430, 458, 470, 860, 916, 940, 1145, 1720, 1832, 1880, 2021, 2290, 4042, 4580, 8084, 9160, 9847, 10105, 10763, 16168, 19694, 20210, 21526, 39388, 40420, 43052, 49235, 53815, 78776, 80840, 86104, 98470, 107630, 196940, 215260, 393880, 430520, 462809, 925618, 1851236, 2314045, 3702472, 4628090, 9256180, 18512360]

約数ペア:

[(1, 18512360), (2, 9256180), (4, 4628090), (5, 3702472), (8, 2314045), (10, 1851236), (20, 925618), (40, 462809), (43, 430520), (47, 393880), (86, 215260), (94, 196940), (172, 107630), (188, 98470), (215, 86104), (229, 80840), (235, 78776), (344, 53815), (376, 49235), (430, 43052), (458, 40420), (470, 39388), (860, 21526), (916, 20210), (940, 19694), (1145, 16168), (1720, 10763), (1832, 10105), (1880, 9847), (2021, 9160), (2290, 8084), (4042, 4580)]