20405580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26161}}^1$

素因数の和:26186

約数の個数: 48

約数和(自身を含む): 61533024

約数和(自身を除く): 41127444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26161, 52322, 78483, 104644, 130805, 156966, 261610, 313932, 340093, 392415, 523220, 680186, 784830, 1020279, 1360372, 1569660, 1700465, 2040558, 3400930, 4081116, 5101395, 6801860, 10202790, 20405580]

約数ペア:

[(1, 20405580), (2, 10202790), (3, 6801860), (4, 5101395), (5, 4081116), (6, 3400930), (10, 2040558), (12, 1700465), (13, 1569660), (15, 1360372), (20, 1020279), (26, 784830), (30, 680186), (39, 523220), (52, 392415), (60, 340093), (65, 313932), (78, 261610), (130, 156966), (156, 130805), (195, 104644), (260, 78483), (390, 52322), (780, 26161)]