20178392

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{773}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 40960080

約数和(自身を除く): 20781688

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 251, 502, 773, 1004, 1546, 2008, 3092, 3263, 6184, 6526, 10049, 13052, 20098, 26104, 40196, 80392, 194023, 388046, 776092, 1552184, 2522299, 5044598, 10089196, 20178392]

約数ペア:

[(1, 20178392), (2, 10089196), (4, 5044598), (8, 2522299), (13, 1552184), (26, 776092), (52, 388046), (104, 194023), (251, 80392), (502, 40196), (773, 26104), (1004, 20098), (1546, 13052), (2008, 10049), (3092, 6526), (3263, 6184)]