18931528

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 44968320

約数和(自身を除く): 26036792

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 73, 77, 88, 146, 154, 292, 308, 421, 511, 584, 616, 803, 842, 1022, 1606, 1684, 2044, 2947, 3212, 3368, 4088, 4631, 5621, 5894, 6424, 9262, 11242, 11788, 18524, 22484, 23576, 30733, 32417, 37048, 44968, 61466, 64834, 122932, 129668, 215131, 245864, 259336, 338063, 430262, 676126, 860524, 1352252, 1721048, 2366441, 2704504, 4732882, 9465764, 18931528]

約数ペア:

[(1, 18931528), (2, 9465764), (4, 4732882), (7, 2704504), (8, 2366441), (11, 1721048), (14, 1352252), (22, 860524), (28, 676126), (44, 430262), (56, 338063), (73, 259336), (77, 245864), (88, 215131), (146, 129668), (154, 122932), (292, 64834), (308, 61466), (421, 44968), (511, 37048), (584, 32417), (616, 30733), (803, 23576), (842, 22484), (1022, 18524), (1606, 11788), (1684, 11242), (2044, 9262), (2947, 6424), (3212, 5894), (3368, 5621), (4088, 4631)]