21138288

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{467}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 58496256

約数和(自身を除く): 37357968

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 41, 46, 48, 69, 82, 92, 123, 138, 164, 184, 246, 276, 328, 368, 467, 492, 552, 656, 934, 943, 984, 1104, 1401, 1868, 1886, 1968, 2802, 2829, 3736, 3772, 5604, 5658, 7472, 7544, 10741, 11208, 11316, 15088, 19147, 21482, 22416, 22632, 32223, 38294, 42964, 45264, 57441, 64446, 76588, 85928, 114882, 128892, 153176, 171856, 229764, 257784, 306352, 440381, 459528, 515568, 880762, 919056, 1321143, 1761524, 2642286, 3523048, 5284572, 7046096, 10569144, 21138288]

約数ペア:

[(1, 21138288), (2, 10569144), (3, 7046096), (4, 5284572), (6, 3523048), (8, 2642286), (12, 1761524), (16, 1321143), (23, 919056), (24, 880762), (41, 515568), (46, 459528), (48, 440381), (69, 306352), (82, 257784), (92, 229764), (123, 171856), (138, 153176), (164, 128892), (184, 114882), (246, 85928), (276, 76588), (328, 64446), (368, 57441), (467, 45264), (492, 42964), (552, 38294), (656, 32223), (934, 22632), (943, 22416), (984, 21482), (1104, 19147), (1401, 15088), (1868, 11316), (1886, 11208), (1968, 10741), (2802, 7544), (2829, 7472), (3736, 5658), (3772, 5604)]