19696257

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^2\times {\mathrm{197}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 35038080

約数和(自身を除く): 15341823

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 197, 207, 483, 529, 591, 621, 1379, 1449, 1587, 1773, 3703, 4137, 4347, 4531, 4761, 5319, 11109, 12411, 13593, 14283, 31717, 33327, 37233, 40779, 95151, 99981, 104213, 122337, 285453, 312639, 729491, 856359, 937917, 2188473, 2813751, 6565419, 19696257]

約数ペア:

[(1, 19696257), (3, 6565419), (7, 2813751), (9, 2188473), (21, 937917), (23, 856359), (27, 729491), (63, 312639), (69, 285453), (161, 122337), (189, 104213), (197, 99981), (207, 95151), (483, 40779), (529, 37233), (591, 33327), (621, 31717), (1379, 14283), (1449, 13593), (1587, 12411), (1773, 11109), (3703, 5319), (4137, 4761), (4347, 4531)]