81427780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{8681}}^1$

素因数の和:8764

約数の個数: 48

約数和(自身を含む): 198366336

約数和(自身を除く): 116938556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 4690, 8681, 9380, 17362, 34724, 43405, 60767, 86810, 121534, 173620, 243068, 303835, 581627, 607670, 1163254, 1215340, 2326508, 2908135, 4071389, 5816270, 8142778, 11632540, 16285556, 20356945, 40713890, 81427780]

約数ペア:

[(1, 81427780), (2, 40713890), (4, 20356945), (5, 16285556), (7, 11632540), (10, 8142778), (14, 5816270), (20, 4071389), (28, 2908135), (35, 2326508), (67, 1215340), (70, 1163254), (134, 607670), (140, 581627), (268, 303835), (335, 243068), (469, 173620), (670, 121534), (938, 86810), (1340, 60767), (1876, 43405), (2345, 34724), (4690, 17362), (8681, 9380)]