1981751990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{103811}}^1$

素因数の和:103924

約数の個数: 32

約数和(自身を含む): 3767129856

約数和(自身を除く): 1785377866

約数列:

[1, 2, 5, 10, 23, 46, 83, 115, 166, 230, 415, 830, 1909, 3818, 9545, 19090, 103811, 207622, 519055, 1038110, 2387653, 4775306, 8616313, 11938265, 17232626, 23876530, 43081565, 86163130, 198175199, 396350398, 990875995, 1981751990]

約数ペア:

[(1, 1981751990), (2, 990875995), (5, 396350398), (10, 198175199), (23, 86163130), (46, 43081565), (83, 23876530), (115, 17232626), (166, 11938265), (230, 8616313), (415, 4775306), (830, 2387653), (1909, 1038110), (3818, 519055), (9545, 207622), (19090, 103811)]