19732505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 27143424

約数和(自身を除く): 7410919

約数列:

[1, 5, 13, 23, 65, 67, 115, 197, 299, 335, 871, 985, 1495, 1541, 2561, 4355, 4531, 7705, 12805, 13199, 20033, 22655, 58903, 65995, 100165, 171587, 294515, 303577, 857935, 1517885, 3946501, 19732505]

約数ペア:

[(1, 19732505), (5, 3946501), (13, 1517885), (23, 857935), (65, 303577), (67, 294515), (115, 171587), (197, 100165), (299, 65995), (335, 58903), (871, 22655), (985, 20033), (1495, 13199), (1541, 12805), (2561, 7705), (4355, 4531)]