21553545

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1033}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 37521792

約数和(自身を除く): 15968247

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 1033, 1391, 1605, 3099, 4173, 5165, 6955, 13429, 15495, 20865, 40287, 67145, 110531, 201435, 331593, 552655, 1436903, 1657965, 4310709, 7184515, 21553545]

約数ペア:

[(1, 21553545), (3, 7184515), (5, 4310709), (13, 1657965), (15, 1436903), (39, 552655), (65, 331593), (107, 201435), (195, 110531), (321, 67145), (535, 40287), (1033, 20865), (1391, 15495), (1605, 13429), (3099, 6955), (4173, 5165)]