19724913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 33336576

約数和(自身を除く): 13611663

約数列:

[1, 3, 9, 13, 17, 39, 47, 51, 117, 141, 153, 211, 221, 423, 611, 633, 663, 799, 1833, 1899, 1989, 2397, 2743, 3587, 5499, 7191, 8229, 9917, 10387, 10761, 24687, 29751, 31161, 32283, 46631, 89253, 93483, 128921, 139893, 168589, 386763, 419679, 505767, 1160289, 1517301, 2191657, 6574971, 19724913]

約数ペア:

[(1, 19724913), (3, 6574971), (9, 2191657), (13, 1517301), (17, 1160289), (39, 505767), (47, 419679), (51, 386763), (117, 168589), (141, 139893), (153, 128921), (211, 93483), (221, 89253), (423, 46631), (611, 32283), (633, 31161), (663, 29751), (799, 24687), (1833, 10761), (1899, 10387), (1989, 9917), (2397, 8229), (2743, 7191), (3587, 5499)]