21445893

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 37273600

約数和(自身を除く): 15827707

約数列:

[1, 3, 7, 9, 21, 31, 63, 79, 93, 139, 217, 237, 279, 417, 553, 651, 711, 973, 1251, 1659, 1953, 2449, 2919, 4309, 4977, 7347, 8757, 10981, 12927, 17143, 22041, 30163, 32943, 38781, 51429, 76867, 90489, 98829, 154287, 230601, 271467, 340411, 691803, 1021233, 2382877, 3063699, 7148631, 21445893]

約数ペア:

[(1, 21445893), (3, 7148631), (7, 3063699), (9, 2382877), (21, 1021233), (31, 691803), (63, 340411), (79, 271467), (93, 230601), (139, 154287), (217, 98829), (237, 90489), (279, 76867), (417, 51429), (553, 38781), (651, 32943), (711, 30163), (973, 22041), (1251, 17143), (1659, 12927), (1953, 10981), (2449, 8757), (2919, 7347), (4309, 4977)]