20139824

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:525

約数の個数: 40

約数和(自身を含む): 40576272

約数和(自身を除く): 20436448

約数列:

[1, 2, 4, 8, 16, 43, 73, 86, 146, 172, 292, 344, 401, 584, 688, 802, 1168, 1604, 3139, 3208, 6278, 6416, 12556, 17243, 25112, 29273, 34486, 50224, 58546, 68972, 117092, 137944, 234184, 275888, 468368, 1258739, 2517478, 5034956, 10069912, 20139824]

約数ペア:

[(1, 20139824), (2, 10069912), (4, 5034956), (8, 2517478), (16, 1258739), (43, 468368), (73, 275888), (86, 234184), (146, 137944), (172, 117092), (292, 68972), (344, 58546), (401, 50224), (584, 34486), (688, 29273), (802, 25112), (1168, 17243), (1604, 12556), (3139, 6416), (3208, 6278)]