18780344

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2113}}^1$

素因数の和:2231

約数の個数: 32

約数和(自身を含む): 38813040

約数和(自身を除く): 20032696

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2113, 2222, 4226, 4444, 8452, 8888, 16904, 23243, 46486, 92972, 185944, 213413, 426826, 853652, 1707304, 2347543, 4695086, 9390172, 18780344]

約数ペア:

[(1, 18780344), (2, 9390172), (4, 4695086), (8, 2347543), (11, 1707304), (22, 853652), (44, 426826), (88, 213413), (101, 185944), (202, 92972), (404, 46486), (808, 23243), (1111, 16904), (2113, 8888), (2222, 8452), (4226, 4444)]