18921872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{929}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 39208800

約数和(自身を除く): 20286928

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 929, 1072, 1273, 1858, 2546, 3716, 5092, 7432, 10184, 14864, 17651, 20368, 35302, 62243, 70604, 124486, 141208, 248972, 282416, 497944, 995888, 1182617, 2365234, 4730468, 9460936, 18921872]

約数ペア:

[(1, 18921872), (2, 9460936), (4, 4730468), (8, 2365234), (16, 1182617), (19, 995888), (38, 497944), (67, 282416), (76, 248972), (134, 141208), (152, 124486), (268, 70604), (304, 62243), (536, 35302), (929, 20368), (1072, 17651), (1273, 14864), (1858, 10184), (2546, 7432), (3716, 5092)]