21291326

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 37594368

約数和(自身を除く): 16303042

約数列:

[1, 2, 7, 14, 73, 83, 146, 166, 251, 502, 511, 581, 1022, 1162, 1757, 3514, 6059, 12118, 18323, 20833, 36646, 41666, 42413, 84826, 128261, 145831, 256522, 291662, 1520809, 3041618, 10645663, 21291326]

約数ペア:

[(1, 21291326), (2, 10645663), (7, 3041618), (14, 1520809), (73, 291662), (83, 256522), (146, 145831), (166, 128261), (251, 84826), (502, 42413), (511, 41666), (581, 36646), (1022, 20833), (1162, 18323), (1757, 12118), (3514, 6059)]