21919164

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 52956288

約数和(自身を除く): 31037124

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 107, 129, 172, 214, 258, 321, 397, 428, 516, 642, 794, 1191, 1284, 1588, 2382, 4601, 4764, 9202, 13803, 17071, 18404, 27606, 34142, 42479, 51213, 55212, 68284, 84958, 102426, 127437, 169916, 204852, 254874, 509748, 1826597, 3653194, 5479791, 7306388, 10959582, 21919164]

約数ペア:

[(1, 21919164), (2, 10959582), (3, 7306388), (4, 5479791), (6, 3653194), (12, 1826597), (43, 509748), (86, 254874), (107, 204852), (129, 169916), (172, 127437), (214, 102426), (258, 84958), (321, 68284), (397, 55212), (428, 51213), (516, 42479), (642, 34142), (794, 27606), (1191, 18404), (1284, 17071), (1588, 13803), (2382, 9202), (4601, 4764)]