19480240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18731}}^1$

素因数の和:18757

約数の個数: 40

約数和(自身を含む): 48778128

約数和(自身を除く): 29297888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18731, 37462, 74924, 93655, 149848, 187310, 243503, 299696, 374620, 487006, 749240, 974012, 1217515, 1498480, 1948024, 2435030, 3896048, 4870060, 9740120, 19480240]

約数ペア:

[(1, 19480240), (2, 9740120), (4, 4870060), (5, 3896048), (8, 2435030), (10, 1948024), (13, 1498480), (16, 1217515), (20, 974012), (26, 749240), (40, 487006), (52, 374620), (65, 299696), (80, 243503), (104, 187310), (130, 149848), (208, 93655), (260, 74924), (520, 37462), (1040, 18731)]