20672392

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1225

約数の個数: 32

約数和(自身を含む): 41995800

約数和(自身を除く): 21323408

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197, 394, 788, 1009, 1576, 2018, 2561, 4036, 5122, 8072, 10244, 13117, 20488, 26234, 52468, 104936, 198773, 397546, 795092, 1590184, 2584049, 5168098, 10336196, 20672392]

約数ペア:

[(1, 20672392), (2, 10336196), (4, 5168098), (8, 2584049), (13, 1590184), (26, 795092), (52, 397546), (104, 198773), (197, 104936), (394, 52468), (788, 26234), (1009, 20488), (1576, 13117), (2018, 10244), (2561, 8072), (4036, 5122)]