81354420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64567}}^1$

素因数の和:64589

約数の個数: 72

約数和(自身を含む): 282033024

約数和(自身を除く): 200678604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64567, 129134, 193701, 258268, 322835, 387402, 451969, 581103, 645670, 774804, 903938, 968505, 1162206, 1291340, 1355907, 1807876, 1937010, 2259845, 2324412, 2711814, 2905515, 3874020, 4067721, 4519690, 5423628, 5811030, 6779535, 8135442, 9039380, 11622060, 13559070, 16270884, 20338605, 27118140, 40677210, 81354420]

約数ペア:

[(1, 81354420), (2, 40677210), (3, 27118140), (4, 20338605), (5, 16270884), (6, 13559070), (7, 11622060), (9, 9039380), (10, 8135442), (12, 6779535), (14, 5811030), (15, 5423628), (18, 4519690), (20, 4067721), (21, 3874020), (28, 2905515), (30, 2711814), (35, 2324412), (36, 2259845), (42, 1937010), (45, 1807876), (60, 1355907), (63, 1291340), (70, 1162206), (84, 968505), (90, 903938), (105, 774804), (126, 645670), (140, 581103), (180, 451969), (210, 387402), (252, 322835), (315, 258268), (420, 193701), (630, 129134), (1260, 64567)]