21534436

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25881884

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 139, 154, 278, 308, 503, 556, 973, 1006, 1529, 1946, 2012, 3058, 3521, 3892, 5533, 6116, 7042, 10703, 11066, 14084, 21406, 22132, 38731, 42812, 69917, 77462, 139834, 154924, 279668, 489419, 769087, 978838, 1538174, 1957676, 3076348, 5383609, 10767218, 21534436]

約数ペア:

[(1, 21534436), (2, 10767218), (4, 5383609), (7, 3076348), (11, 1957676), (14, 1538174), (22, 978838), (28, 769087), (44, 489419), (77, 279668), (139, 154924), (154, 139834), (278, 77462), (308, 69917), (503, 42812), (556, 38731), (973, 22132), (1006, 21406), (1529, 14084), (1946, 11066), (2012, 10703), (3058, 7042), (3521, 6116), (3892, 5533)]