21080748

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{7949}}^1$

素因数の和:7986

約数の個数: 48

約数和(自身を含む): 56095200

約数和(自身を除く): 35014452

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 442, 663, 884, 1326, 2652, 7949, 15898, 23847, 31796, 47694, 95388, 103337, 135133, 206674, 270266, 310011, 405399, 413348, 540532, 620022, 810798, 1240044, 1621596, 1756729, 3513458, 5270187, 7026916, 10540374, 21080748]

約数ペア:

[(1, 21080748), (2, 10540374), (3, 7026916), (4, 5270187), (6, 3513458), (12, 1756729), (13, 1621596), (17, 1240044), (26, 810798), (34, 620022), (39, 540532), (51, 413348), (52, 405399), (68, 310011), (78, 270266), (102, 206674), (156, 135133), (204, 103337), (221, 95388), (442, 47694), (663, 31796), (884, 23847), (1326, 15898), (2652, 7949)]