18948016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 38988080

約数和(自身を除く): 20040064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 157, 304, 314, 397, 628, 794, 1256, 1588, 2512, 2983, 3176, 5966, 6352, 7543, 11932, 15086, 23864, 30172, 47728, 60344, 62329, 120688, 124658, 249316, 498632, 997264, 1184251, 2368502, 4737004, 9474008, 18948016]

約数ペア:

[(1, 18948016), (2, 9474008), (4, 4737004), (8, 2368502), (16, 1184251), (19, 997264), (38, 498632), (76, 249316), (152, 124658), (157, 120688), (304, 62329), (314, 60344), (397, 47728), (628, 30172), (794, 23864), (1256, 15086), (1588, 11932), (2512, 7543), (2983, 6352), (3176, 5966)]