21023080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40429}}^1$

素因数の和:40453

約数の個数: 32

約数和(自身を含む): 50941800

約数和(自身を除く): 29918720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40429, 80858, 161716, 202145, 323432, 404290, 525577, 808580, 1051154, 1617160, 2102308, 2627885, 4204616, 5255770, 10511540, 21023080]

約数ペア:

[(1, 21023080), (2, 10511540), (4, 5255770), (5, 4204616), (8, 2627885), (10, 2102308), (13, 1617160), (20, 1051154), (26, 808580), (40, 525577), (52, 404290), (65, 323432), (104, 202145), (130, 161716), (260, 80858), (520, 40429)]