638721648

素因数分解:

$2^4\times 3^2\times {\mathrm{4435567}}^1$

素因数の和:4435581

約数の個数: 30

約数和(自身を含む): 1787533904

約数和(自身を除く): 1148812256

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 4435567, 8871134, 13306701, 17742268, 26613402, 35484536, 39920103, 53226804, 70969072, 79840206, 106453608, 159680412, 212907216, 319360824, 638721648]

約数ペア:

[(1, 638721648), (2, 319360824), (3, 212907216), (4, 159680412), (6, 106453608), (8, 79840206), (9, 70969072), (12, 53226804), (16, 39920103), (18, 35484536), (24, 26613402), (36, 17742268), (48, 13306701), (72, 8871134), (144, 4435567)]