400299988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{1321}}^1$

素因数の和:1504

約数の個数: 48

約数和(自身を含む): 783554688

約数和(自身を除く): 383254700

約数列:

[1, 2, 4, 11, 22, 44, 71, 97, 142, 194, 284, 388, 781, 1067, 1321, 1562, 2134, 2642, 3124, 4268, 5284, 6887, 13774, 14531, 27548, 29062, 58124, 75757, 93791, 128137, 151514, 187582, 256274, 303028, 375164, 512548, 1031701, 1409507, 2063402, 2819014, 4126804, 5638028, 9097727, 18195454, 36390908, 100074997, 200149994, 400299988]

約数ペア:

[(1, 400299988), (2, 200149994), (4, 100074997), (11, 36390908), (22, 18195454), (44, 9097727), (71, 5638028), (97, 4126804), (142, 2819014), (194, 2063402), (284, 1409507), (388, 1031701), (781, 512548), (1067, 375164), (1321, 303028), (1562, 256274), (2134, 187582), (2642, 151514), (3124, 128137), (4268, 93791), (5284, 75757), (6887, 58124), (13774, 29062), (14531, 27548)]