21939808

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:575

約数の個数: 48

約数和(自身を含む): 47540304

約数和(自身を除く): 25600496

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 157, 176, 314, 352, 397, 628, 794, 1256, 1588, 1727, 2512, 3176, 3454, 4367, 5024, 6352, 6908, 8734, 12704, 13816, 17468, 27632, 34936, 55264, 62329, 69872, 124658, 139744, 249316, 498632, 685619, 997264, 1371238, 1994528, 2742476, 5484952, 10969904, 21939808]

約数ペア:

[(1, 21939808), (2, 10969904), (4, 5484952), (8, 2742476), (11, 1994528), (16, 1371238), (22, 997264), (32, 685619), (44, 498632), (88, 249316), (157, 139744), (176, 124658), (314, 69872), (352, 62329), (397, 55264), (628, 34936), (794, 27632), (1256, 17468), (1588, 13816), (1727, 12704), (2512, 8734), (3176, 6908), (3454, 6352), (4367, 5024)]