20939982

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:497

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 30070578

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 53, 69, 106, 138, 159, 161, 318, 322, 371, 409, 483, 742, 818, 966, 1113, 1219, 1227, 2226, 2438, 2454, 2863, 3657, 5726, 7314, 8533, 8589, 9407, 17066, 17178, 18814, 21677, 25599, 28221, 43354, 51198, 56442, 65031, 65849, 130062, 131698, 151739, 197547, 303478, 395094, 455217, 498571, 910434, 997142, 1495713, 2991426, 3489997, 6979994, 10469991, 20939982]

約数ペア:

[(1, 20939982), (2, 10469991), (3, 6979994), (6, 3489997), (7, 2991426), (14, 1495713), (21, 997142), (23, 910434), (42, 498571), (46, 455217), (53, 395094), (69, 303478), (106, 197547), (138, 151739), (159, 131698), (161, 130062), (318, 65849), (322, 65031), (371, 56442), (409, 51198), (483, 43354), (742, 28221), (818, 25599), (966, 21677), (1113, 18814), (1219, 17178), (1227, 17066), (2226, 9407), (2438, 8589), (2454, 8533), (2863, 7314), (3657, 5726)]