28219716

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1121

約数の個数: 72

約数和(自身を含む): 82328064

約数和(自身を除く): 54108348

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 113, 126, 226, 252, 339, 452, 678, 791, 991, 1017, 1356, 1582, 1982, 2034, 2373, 2973, 3164, 3964, 4068, 4746, 5946, 6937, 7119, 8919, 9492, 11892, 13874, 14238, 17838, 20811, 27748, 28476, 35676, 41622, 62433, 83244, 111983, 124866, 223966, 249732, 335949, 447932, 671898, 783881, 1007847, 1343796, 1567762, 2015694, 2351643, 3135524, 4031388, 4703286, 7054929, 9406572, 14109858, 28219716]

約数ペア:

[(1, 28219716), (2, 14109858), (3, 9406572), (4, 7054929), (6, 4703286), (7, 4031388), (9, 3135524), (12, 2351643), (14, 2015694), (18, 1567762), (21, 1343796), (28, 1007847), (36, 783881), (42, 671898), (63, 447932), (84, 335949), (113, 249732), (126, 223966), (226, 124866), (252, 111983), (339, 83244), (452, 62433), (678, 41622), (791, 35676), (991, 28476), (1017, 27748), (1356, 20811), (1582, 17838), (1982, 14238), (2034, 13874), (2373, 11892), (2973, 9492), (3164, 8919), (3964, 7119), (4068, 6937), (4746, 5946)]