19879431

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 11570169

約数列:

[1, 3, 11, 13, 33, 39, 143, 149, 311, 429, 447, 933, 1639, 1937, 3421, 4043, 4917, 5811, 10263, 12129, 21307, 44473, 46339, 63921, 133419, 139017, 509729, 602407, 1529187, 1807221, 6626477, 19879431]

約数ペア:

[(1, 19879431), (3, 6626477), (11, 1807221), (13, 1529187), (33, 602407), (39, 509729), (143, 139017), (149, 133419), (311, 63921), (429, 46339), (447, 44473), (933, 21307), (1639, 12129), (1937, 10263), (3421, 5811), (4043, 4917)]