20797900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6709}}^1$

素因数の和:6754

約数の個数: 36

約数和(自身を含む): 46594240

約数和(自身を除く): 25796340

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6709, 13418, 26836, 33545, 67090, 134180, 167725, 207979, 335450, 415958, 670900, 831916, 1039895, 2079790, 4159580, 5199475, 10398950, 20797900]

約数ペア:

[(1, 20797900), (2, 10398950), (4, 5199475), (5, 4159580), (10, 2079790), (20, 1039895), (25, 831916), (31, 670900), (50, 415958), (62, 335450), (100, 207979), (124, 167725), (155, 134180), (310, 67090), (620, 33545), (775, 26836), (1550, 13418), (3100, 6709)]