25665140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 55569360

約数和(自身を除く): 29904220

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 193, 218, 244, 305, 386, 436, 545, 610, 772, 965, 1090, 1220, 1930, 2180, 3860, 6649, 11773, 13298, 21037, 23546, 26596, 33245, 42074, 47092, 58865, 66490, 84148, 105185, 117730, 132980, 210370, 235460, 420740, 1283257, 2566514, 5133028, 6416285, 12832570, 25665140]

約数ペア:

[(1, 25665140), (2, 12832570), (4, 6416285), (5, 5133028), (10, 2566514), (20, 1283257), (61, 420740), (109, 235460), (122, 210370), (193, 132980), (218, 117730), (244, 105185), (305, 84148), (386, 66490), (436, 58865), (545, 47092), (610, 42074), (772, 33245), (965, 26596), (1090, 23546), (1220, 21037), (1930, 13298), (2180, 11773), (3860, 6649)]