20280688

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 40622400

約数和(自身を除く): 20341712

約数列:

[1, 2, 4, 8, 16, 47, 94, 149, 181, 188, 298, 362, 376, 596, 724, 752, 1192, 1448, 2384, 2896, 7003, 8507, 14006, 17014, 26969, 28012, 34028, 53938, 56024, 68056, 107876, 112048, 136112, 215752, 431504, 1267543, 2535086, 5070172, 10140344, 20280688]

約数ペア:

[(1, 20280688), (2, 10140344), (4, 5070172), (8, 2535086), (16, 1267543), (47, 431504), (94, 215752), (149, 136112), (181, 112048), (188, 107876), (298, 68056), (362, 56024), (376, 53938), (596, 34028), (724, 28012), (752, 26969), (1192, 17014), (1448, 14006), (2384, 8507), (2896, 7003)]