18907273

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 24820992

約数和(自身を除く): 5913719

約数列:

[1, 7, 11, 41, 53, 77, 113, 287, 371, 451, 583, 791, 1243, 2173, 3157, 4081, 4633, 5989, 8701, 15211, 23903, 32431, 41923, 50963, 65879, 167321, 245549, 356741, 461153, 1718843, 2701039, 18907273]

約数ペア:

[(1, 18907273), (7, 2701039), (11, 1718843), (41, 461153), (53, 356741), (77, 245549), (113, 167321), (287, 65879), (371, 50963), (451, 41923), (583, 32431), (791, 23903), (1243, 15211), (2173, 8701), (3157, 5989), (4081, 4633)]