81217656

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{86771}}^1$

素因数の和:86796

約数の個数: 48

約数和(自身を含む): 236887560

約数和(自身を除く): 155669904

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 86771, 173542, 260313, 347084, 520626, 694168, 780939, 1041252, 1128023, 1561878, 2082504, 2256046, 3123756, 3384069, 4512092, 6247512, 6768138, 9024184, 10152207, 13536276, 20304414, 27072552, 40608828, 81217656]

約数ペア:

[(1, 81217656), (2, 40608828), (3, 27072552), (4, 20304414), (6, 13536276), (8, 10152207), (9, 9024184), (12, 6768138), (13, 6247512), (18, 4512092), (24, 3384069), (26, 3123756), (36, 2256046), (39, 2082504), (52, 1561878), (72, 1128023), (78, 1041252), (104, 780939), (117, 694168), (156, 520626), (234, 347084), (312, 260313), (468, 173542), (936, 86771)]