25907920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5309}}^1$

素因数の和:5383

約数の個数: 40

約数和(自身を含む): 61234920

約数和(自身を除く): 35327000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5309, 10618, 21236, 26545, 42472, 53090, 84944, 106180, 212360, 323849, 424720, 647698, 1295396, 1619245, 2590792, 3238490, 5181584, 6476980, 12953960, 25907920]

約数ペア:

[(1, 25907920), (2, 12953960), (4, 6476980), (5, 5181584), (8, 3238490), (10, 2590792), (16, 1619245), (20, 1295396), (40, 647698), (61, 424720), (80, 323849), (122, 212360), (244, 106180), (305, 84944), (488, 53090), (610, 42472), (976, 26545), (1220, 21236), (2440, 10618), (4880, 5309)]