20228275

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 26537984

約数和(自身を除く): 6309709

約数列:

[1, 5, 25, 31, 43, 155, 215, 607, 775, 1075, 1333, 3035, 6665, 15175, 18817, 26101, 33325, 94085, 130505, 470425, 652525, 809131, 4045655, 20228275]

約数ペア:

[(1, 20228275), (5, 4045655), (25, 809131), (31, 652525), (43, 470425), (155, 130505), (215, 94085), (607, 33325), (775, 26101), (1075, 18817), (1333, 15175), (3035, 6665)]