27891985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1297}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 40372992

約数和(自身を除く): 12481007

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1297, 1955, 4301, 6485, 14267, 21505, 22049, 29831, 71335, 110245, 149155, 242539, 328141, 507127, 1212695, 1640705, 2535635, 5578397, 27891985]

約数ペア:

[(1, 27891985), (5, 5578397), (11, 2535635), (17, 1640705), (23, 1212695), (55, 507127), (85, 328141), (115, 242539), (187, 149155), (253, 110245), (391, 71335), (935, 29831), (1265, 22049), (1297, 21505), (1955, 14267), (4301, 6485)]