20640855

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 34110720

約数和(自身を除く): 13469865

約数列:

[1, 3, 5, 15, 59, 83, 177, 249, 281, 295, 415, 843, 885, 1245, 1405, 4215, 4897, 14691, 16579, 23323, 24485, 49737, 69969, 73455, 82895, 116615, 248685, 349845, 1376057, 4128171, 6880285, 20640855]

約数ペア:

[(1, 20640855), (3, 6880285), (5, 4128171), (15, 1376057), (59, 349845), (83, 248685), (177, 116615), (249, 82895), (281, 73455), (295, 69969), (415, 49737), (843, 24485), (885, 23323), (1245, 16579), (1405, 14691), (4215, 4897)]