81102280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1777}}^1$

素因数の和:1958

約数の個数: 64

約数和(自身を含む): 209946240

約数和(自身を除く): 128843960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 1777, 2282, 3260, 3554, 4564, 5705, 6520, 7108, 8885, 9128, 11410, 12439, 14216, 17770, 22820, 24878, 35540, 45640, 49756, 62195, 71080, 99512, 124390, 248780, 289651, 497560, 579302, 1158604, 1448255, 2027557, 2317208, 2896510, 4055114, 5793020, 8110228, 10137785, 11586040, 16220456, 20275570, 40551140, 81102280]

約数ペア:

[(1, 81102280), (2, 40551140), (4, 20275570), (5, 16220456), (7, 11586040), (8, 10137785), (10, 8110228), (14, 5793020), (20, 4055114), (28, 2896510), (35, 2317208), (40, 2027557), (56, 1448255), (70, 1158604), (140, 579302), (163, 497560), (280, 289651), (326, 248780), (652, 124390), (815, 99512), (1141, 71080), (1304, 62195), (1630, 49756), (1777, 45640), (2282, 35540), (3260, 24878), (3554, 22820), (4564, 17770), (5705, 14216), (6520, 12439), (7108, 11410), (8885, 9128)]