12856220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 29338848

約数和(自身を除く): 16482628

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 251, 260, 394, 502, 788, 985, 1004, 1255, 1970, 2510, 2561, 3263, 3940, 5020, 5122, 6526, 10244, 12805, 13052, 16315, 25610, 32630, 49447, 51220, 65260, 98894, 197788, 247235, 494470, 642811, 988940, 1285622, 2571244, 3214055, 6428110, 12856220]

約数ペア:

[(1, 12856220), (2, 6428110), (4, 3214055), (5, 2571244), (10, 1285622), (13, 988940), (20, 642811), (26, 494470), (52, 247235), (65, 197788), (130, 98894), (197, 65260), (251, 51220), (260, 49447), (394, 32630), (502, 25610), (788, 16315), (985, 13052), (1004, 12805), (1255, 10244), (1970, 6526), (2510, 5122), (2561, 5020), (3263, 3940)]