25712440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 62868960

約数和(自身を除く): 37156520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 197, 251, 260, 394, 502, 520, 788, 985, 1004, 1255, 1576, 1970, 2008, 2510, 2561, 3263, 3940, 5020, 5122, 6526, 7880, 10040, 10244, 12805, 13052, 16315, 20488, 25610, 26104, 32630, 49447, 51220, 65260, 98894, 102440, 130520, 197788, 247235, 395576, 494470, 642811, 988940, 1285622, 1977880, 2571244, 3214055, 5142488, 6428110, 12856220, 25712440]

約数ペア:

[(1, 25712440), (2, 12856220), (4, 6428110), (5, 5142488), (8, 3214055), (10, 2571244), (13, 1977880), (20, 1285622), (26, 988940), (40, 642811), (52, 494470), (65, 395576), (104, 247235), (130, 197788), (197, 130520), (251, 102440), (260, 98894), (394, 65260), (502, 51220), (520, 49447), (788, 32630), (985, 26104), (1004, 25610), (1255, 20488), (1576, 16315), (1970, 13052), (2008, 12805), (2510, 10244), (2561, 10040), (3263, 7880), (3940, 6526), (5020, 5122)]