21011598

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 47410272

約数和(自身を除く): 26398674

約数列:

[1, 2, 3, 6, 9, 18, 41, 71, 82, 123, 142, 213, 246, 369, 401, 426, 639, 738, 802, 1203, 1278, 2406, 2911, 3609, 5822, 7218, 8733, 16441, 17466, 26199, 28471, 32882, 49323, 52398, 56942, 85413, 98646, 147969, 170826, 256239, 295938, 512478, 1167311, 2334622, 3501933, 7003866, 10505799, 21011598]

約数ペア:

[(1, 21011598), (2, 10505799), (3, 7003866), (6, 3501933), (9, 2334622), (18, 1167311), (41, 512478), (71, 295938), (82, 256239), (123, 170826), (142, 147969), (213, 98646), (246, 85413), (369, 56942), (401, 52398), (426, 49323), (639, 32882), (738, 28471), (802, 26199), (1203, 17466), (1278, 16441), (2406, 8733), (2911, 7218), (3609, 5822)]