21758944

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 44434656

約数和(自身を除く): 22675712

約数列:

[1, 2, 4, 8, 16, 32, 61, 71, 122, 142, 157, 244, 284, 314, 488, 568, 628, 976, 1136, 1256, 1952, 2272, 2512, 4331, 5024, 8662, 9577, 11147, 17324, 19154, 22294, 34648, 38308, 44588, 69296, 76616, 89176, 138592, 153232, 178352, 306464, 356704, 679967, 1359934, 2719868, 5439736, 10879472, 21758944]

約数ペア:

[(1, 21758944), (2, 10879472), (4, 5439736), (8, 2719868), (16, 1359934), (32, 679967), (61, 356704), (71, 306464), (122, 178352), (142, 153232), (157, 138592), (244, 89176), (284, 76616), (314, 69296), (488, 44588), (568, 38308), (628, 34648), (976, 22294), (1136, 19154), (1256, 17324), (1952, 11147), (2272, 9577), (2512, 8662), (4331, 5024)]