19904235

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{991}}^1$

素因数の和:1115

約数の個数: 32

約数和(自身を含む): 34664448

約数和(自身を除く): 14760213

約数列:

[1, 3, 5, 13, 15, 39, 65, 103, 195, 309, 515, 991, 1339, 1545, 2973, 4017, 4955, 6695, 12883, 14865, 20085, 38649, 64415, 102073, 193245, 306219, 510365, 1326949, 1531095, 3980847, 6634745, 19904235]

約数ペア:

[(1, 19904235), (3, 6634745), (5, 3980847), (13, 1531095), (15, 1326949), (39, 510365), (65, 306219), (103, 193245), (195, 102073), (309, 64415), (515, 38649), (991, 20085), (1339, 14865), (1545, 12883), (2973, 6695), (4017, 4955)]