393463990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{20611}}^1$

素因数の和:20724

約数の個数: 32

約数和(自身を含む): 747968256

約数和(自身を除く): 354504266

約数列:

[1, 2, 5, 10, 23, 46, 83, 115, 166, 230, 415, 830, 1909, 3818, 9545, 19090, 20611, 41222, 103055, 206110, 474053, 948106, 1710713, 2370265, 3421426, 4740530, 8553565, 17107130, 39346399, 78692798, 196731995, 393463990]

約数ペア:

[(1, 393463990), (2, 196731995), (5, 78692798), (10, 39346399), (23, 17107130), (46, 8553565), (83, 4740530), (115, 3421426), (166, 2370265), (230, 1710713), (415, 948106), (830, 474053), (1909, 206110), (3818, 103055), (9545, 41222), (19090, 20611)]