20801196

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^3\times {\mathrm{263}}^1$

素因数の和:312

約数の個数: 72

約数和(自身を含む): 57177120

約数和(自身を除く): 36375924

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 263, 338, 468, 507, 526, 676, 789, 1014, 1052, 1521, 1578, 2028, 2197, 2367, 3042, 3156, 3419, 4394, 4734, 6084, 6591, 6838, 8788, 9468, 10257, 13182, 13676, 19773, 20514, 26364, 30771, 39546, 41028, 44447, 61542, 79092, 88894, 123084, 133341, 177788, 266682, 400023, 533364, 577811, 800046, 1155622, 1600092, 1733433, 2311244, 3466866, 5200299, 6933732, 10400598, 20801196]

約数ペア:

[(1, 20801196), (2, 10400598), (3, 6933732), (4, 5200299), (6, 3466866), (9, 2311244), (12, 1733433), (13, 1600092), (18, 1155622), (26, 800046), (36, 577811), (39, 533364), (52, 400023), (78, 266682), (117, 177788), (156, 133341), (169, 123084), (234, 88894), (263, 79092), (338, 61542), (468, 44447), (507, 41028), (526, 39546), (676, 30771), (789, 26364), (1014, 20514), (1052, 19773), (1521, 13676), (1578, 13182), (2028, 10257), (2197, 9468), (2367, 8788), (3042, 6838), (3156, 6591), (3419, 6084), (4394, 4734)]