21179556

素因数分解:

$2^2\times 3^4\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:646

約数の個数: 60

約数和(自身を含む): 55902000

約数和(自身を除く): 34722444

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 131, 162, 262, 324, 393, 499, 524, 786, 998, 1179, 1497, 1572, 1996, 2358, 2994, 3537, 4491, 4716, 5988, 7074, 8982, 10611, 13473, 14148, 17964, 21222, 26946, 40419, 42444, 53892, 65369, 80838, 130738, 161676, 196107, 261476, 392214, 588321, 784428, 1176642, 1764963, 2353284, 3529926, 5294889, 7059852, 10589778, 21179556]

約数ペア:

[(1, 21179556), (2, 10589778), (3, 7059852), (4, 5294889), (6, 3529926), (9, 2353284), (12, 1764963), (18, 1176642), (27, 784428), (36, 588321), (54, 392214), (81, 261476), (108, 196107), (131, 161676), (162, 130738), (262, 80838), (324, 65369), (393, 53892), (499, 42444), (524, 40419), (786, 26946), (998, 21222), (1179, 17964), (1497, 14148), (1572, 13473), (1996, 10611), (2358, 8982), (2994, 7074), (3537, 5988), (4491, 4716)]