81281810

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{1021}}^1$

素因数の和:1466

約数の個数: 32

約数和(自身を含む): 154526400

約数和(自身を除く): 73244590

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 419, 838, 1021, 2042, 2095, 4190, 5105, 7961, 10210, 15922, 19399, 38798, 39805, 79610, 96995, 193990, 427799, 855598, 2138995, 4277990, 8128181, 16256362, 40640905, 81281810]

約数ペア:

[(1, 81281810), (2, 40640905), (5, 16256362), (10, 8128181), (19, 4277990), (38, 2138995), (95, 855598), (190, 427799), (419, 193990), (838, 96995), (1021, 79610), (2042, 39805), (2095, 38798), (4190, 19399), (5105, 15922), (7961, 10210)]