20169876040

素因数分解:

$2^3\times 5^1\times {\mathrm{19681}}^1\times {\mathrm{25621}}^1$

素因数の和:45313

約数の個数: 32

約数和(自身を含む): 45386298360

約数和(自身を除く): 25216422320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 19681, 25621, 39362, 51242, 78724, 98405, 102484, 128105, 157448, 196810, 204968, 256210, 393620, 512420, 787240, 1024840, 504246901, 1008493802, 2016987604, 2521234505, 4033975208, 5042469010, 10084938020, 20169876040]

約数ペア:

[(1, 20169876040), (2, 10084938020), (4, 5042469010), (5, 4033975208), (8, 2521234505), (10, 2016987604), (20, 1008493802), (40, 504246901), (19681, 1024840), (25621, 787240), (39362, 512420), (51242, 393620), (78724, 256210), (98405, 204968), (102484, 196810), (128105, 157448)]