19657911

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 33730560

約数和(自身を除く): 14072649

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 169, 191, 203, 273, 377, 507, 573, 609, 1131, 1183, 1337, 2483, 2639, 3549, 4011, 4901, 5539, 7449, 7917, 14703, 16617, 17381, 32279, 34307, 38773, 52143, 72007, 96837, 102921, 116319, 216021, 225953, 504049, 677859, 936091, 1512147, 2808273, 6552637, 19657911]

約数ペア:

[(1, 19657911), (3, 6552637), (7, 2808273), (13, 1512147), (21, 936091), (29, 677859), (39, 504049), (87, 225953), (91, 216021), (169, 116319), (191, 102921), (203, 96837), (273, 72007), (377, 52143), (507, 38773), (573, 34307), (609, 32279), (1131, 17381), (1183, 16617), (1337, 14703), (2483, 7917), (2639, 7449), (3549, 5539), (4011, 4901)]