20677215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{991}}^1$

素因数の和:1119

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 15320481

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 991, 1391, 1605, 2973, 4173, 4955, 6955, 12883, 14865, 20865, 38649, 64415, 106037, 193245, 318111, 530185, 1378481, 1590555, 4135443, 6892405, 20677215]

約数ペア:

[(1, 20677215), (3, 6892405), (5, 4135443), (13, 1590555), (15, 1378481), (39, 530185), (65, 318111), (107, 193245), (195, 106037), (321, 64415), (535, 38649), (991, 20865), (1391, 14865), (1605, 12883), (2973, 6955), (4173, 4955)]