21406788

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 96

約数和(自身を含む): 60838400

約数和(自身を除く): 39431612

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 79, 108, 117, 156, 158, 193, 234, 237, 316, 351, 386, 468, 474, 579, 702, 711, 772, 948, 1027, 1158, 1404, 1422, 1737, 2054, 2133, 2316, 2509, 2844, 3081, 3474, 4108, 4266, 5018, 5211, 6162, 6948, 7527, 8532, 9243, 10036, 10422, 12324, 15054, 15247, 18486, 20844, 22581, 27729, 30108, 30494, 36972, 45162, 45741, 55458, 60988, 67743, 90324, 91482, 110916, 135486, 137223, 182964, 198211, 270972, 274446, 396422, 411669, 548892, 594633, 792844, 823338, 1189266, 1646676, 1783899, 2378532, 3567798, 5351697, 7135596, 10703394, 21406788]

約数ペア:

[(1, 21406788), (2, 10703394), (3, 7135596), (4, 5351697), (6, 3567798), (9, 2378532), (12, 1783899), (13, 1646676), (18, 1189266), (26, 823338), (27, 792844), (36, 594633), (39, 548892), (52, 411669), (54, 396422), (78, 274446), (79, 270972), (108, 198211), (117, 182964), (156, 137223), (158, 135486), (193, 110916), (234, 91482), (237, 90324), (316, 67743), (351, 60988), (386, 55458), (468, 45741), (474, 45162), (579, 36972), (702, 30494), (711, 30108), (772, 27729), (948, 22581), (1027, 20844), (1158, 18486), (1404, 15247), (1422, 15054), (1737, 12324), (2054, 10422), (2133, 10036), (2316, 9243), (2509, 8532), (2844, 7527), (3081, 6948), (3474, 6162), (4108, 5211), (4266, 5018)]