21000456

素因数分解:

$2^3\times 3^2\times {\mathrm{137}}^1\times {\mathrm{2129}}^1$

素因数の和:2278

約数の個数: 48

約数和(自身を含む): 57318300

約数和(自身を除く): 36317844

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 137, 274, 411, 548, 822, 1096, 1233, 1644, 2129, 2466, 3288, 4258, 4932, 6387, 8516, 9864, 12774, 17032, 19161, 25548, 38322, 51096, 76644, 153288, 291673, 583346, 875019, 1166692, 1750038, 2333384, 2625057, 3500076, 5250114, 7000152, 10500228, 21000456]

約数ペア:

[(1, 21000456), (2, 10500228), (3, 7000152), (4, 5250114), (6, 3500076), (8, 2625057), (9, 2333384), (12, 1750038), (18, 1166692), (24, 875019), (36, 583346), (72, 291673), (137, 153288), (274, 76644), (411, 51096), (548, 38322), (822, 25548), (1096, 19161), (1233, 17032), (1644, 12774), (2129, 9864), (2466, 8516), (3288, 6387), (4258, 4932)]