21781026

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 48746880

約数和(自身を除く): 26965854

約数列:

[1, 2, 3, 6, 9, 18, 61, 83, 122, 166, 183, 239, 249, 366, 478, 498, 549, 717, 747, 1098, 1434, 1494, 2151, 4302, 5063, 10126, 14579, 15189, 19837, 29158, 30378, 39674, 43737, 45567, 59511, 87474, 91134, 119022, 131211, 178533, 262422, 357066, 1210057, 2420114, 3630171, 7260342, 10890513, 21781026]

約数ペア:

[(1, 21781026), (2, 10890513), (3, 7260342), (6, 3630171), (9, 2420114), (18, 1210057), (61, 357066), (83, 262422), (122, 178533), (166, 131211), (183, 119022), (239, 91134), (249, 87474), (366, 59511), (478, 45567), (498, 43737), (549, 39674), (717, 30378), (747, 29158), (1098, 19837), (1434, 15189), (1494, 14579), (2151, 10126), (4302, 5063)]