90983920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{27739}}^1$

素因数の和:27793

約数の個数: 40

約数和(自身を含む): 216704880

約数和(自身を除く): 125720960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 27739, 55478, 110956, 138695, 221912, 277390, 443824, 554780, 1109560, 1137299, 2219120, 2274598, 4549196, 5686495, 9098392, 11372990, 18196784, 22745980, 45491960, 90983920]

約数ペア:

[(1, 90983920), (2, 45491960), (4, 22745980), (5, 18196784), (8, 11372990), (10, 9098392), (16, 5686495), (20, 4549196), (40, 2274598), (41, 2219120), (80, 1137299), (82, 1109560), (164, 554780), (205, 443824), (328, 277390), (410, 221912), (656, 138695), (820, 110956), (1640, 55478), (3280, 27739)]