21017556

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{3089}}^1$

素因数の和:3115

約数の個数: 72

約数和(自身を含む): 62986560

約数和(自身を除く): 41969004

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 756, 972, 1134, 1701, 2268, 3089, 3402, 6178, 6804, 9267, 12356, 18534, 21623, 27801, 37068, 43246, 55602, 64869, 83403, 86492, 111204, 129738, 166806, 194607, 250209, 259476, 333612, 389214, 500418, 583821, 750627, 778428, 1000836, 1167642, 1501254, 1751463, 2335284, 3002508, 3502926, 5254389, 7005852, 10508778, 21017556]

約数ペア:

[(1, 21017556), (2, 10508778), (3, 7005852), (4, 5254389), (6, 3502926), (7, 3002508), (9, 2335284), (12, 1751463), (14, 1501254), (18, 1167642), (21, 1000836), (27, 778428), (28, 750627), (36, 583821), (42, 500418), (54, 389214), (63, 333612), (81, 259476), (84, 250209), (108, 194607), (126, 166806), (162, 129738), (189, 111204), (243, 86492), (252, 83403), (324, 64869), (378, 55602), (486, 43246), (567, 37068), (756, 27801), (972, 21623), (1134, 18534), (1701, 12356), (2268, 9267), (3089, 6804), (3402, 6178)]