13430980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 29216880

約数和(自身を除く): 15785900

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 109, 122, 202, 218, 244, 305, 404, 436, 505, 545, 610, 1010, 1090, 1220, 2020, 2180, 6161, 6649, 11009, 12322, 13298, 22018, 24644, 26596, 30805, 33245, 44036, 55045, 61610, 66490, 110090, 123220, 132980, 220180, 671549, 1343098, 2686196, 3357745, 6715490, 13430980]

約数ペア:

[(1, 13430980), (2, 6715490), (4, 3357745), (5, 2686196), (10, 1343098), (20, 671549), (61, 220180), (101, 132980), (109, 123220), (122, 110090), (202, 66490), (218, 61610), (244, 55045), (305, 44036), (404, 33245), (436, 30805), (505, 26596), (545, 24644), (610, 22018), (1010, 13298), (1090, 12322), (1220, 11009), (2020, 6649), (2180, 6161)]