17998180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{467}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 21628316

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 467, 470, 820, 934, 940, 1868, 1927, 2335, 3854, 4670, 7708, 9340, 9635, 19147, 19270, 21949, 38294, 38540, 43898, 76588, 87796, 95735, 109745, 191470, 219490, 382940, 438980, 899909, 1799818, 3599636, 4499545, 8999090, 17998180]

約数ペア:

[(1, 17998180), (2, 8999090), (4, 4499545), (5, 3599636), (10, 1799818), (20, 899909), (41, 438980), (47, 382940), (82, 219490), (94, 191470), (164, 109745), (188, 95735), (205, 87796), (235, 76588), (410, 43898), (467, 38540), (470, 38294), (820, 21949), (934, 19270), (940, 19147), (1868, 9635), (1927, 9340), (2335, 7708), (3854, 4670)]