21437985

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 37526976

約数和(自身を除く): 16088991

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 107, 111, 185, 285, 321, 361, 535, 555, 703, 1083, 1605, 1805, 2033, 2109, 3515, 3959, 5415, 6099, 10165, 10545, 11877, 13357, 19795, 30495, 38627, 40071, 59385, 66785, 75221, 115881, 193135, 200355, 225663, 376105, 579405, 1128315, 1429199, 4287597, 7145995, 21437985]

約数ペア:

[(1, 21437985), (3, 7145995), (5, 4287597), (15, 1429199), (19, 1128315), (37, 579405), (57, 376105), (95, 225663), (107, 200355), (111, 193135), (185, 115881), (285, 75221), (321, 66785), (361, 59385), (535, 40071), (555, 38627), (703, 30495), (1083, 19795), (1605, 13357), (1805, 11877), (2033, 10545), (2109, 10165), (3515, 6099), (3959, 5415)]