21515052

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{103}}^2$

素因数の和:239

約数の個数: 54

約数和(自身を含む): 54893412

約数和(自身を除く): 33378360

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 103, 156, 169, 206, 309, 338, 412, 507, 618, 676, 1014, 1236, 1339, 2028, 2678, 4017, 5356, 8034, 10609, 16068, 17407, 21218, 31827, 34814, 42436, 52221, 63654, 69628, 104442, 127308, 137917, 208884, 275834, 413751, 551668, 827502, 1655004, 1792921, 3585842, 5378763, 7171684, 10757526, 21515052]

約数ペア:

[(1, 21515052), (2, 10757526), (3, 7171684), (4, 5378763), (6, 3585842), (12, 1792921), (13, 1655004), (26, 827502), (39, 551668), (52, 413751), (78, 275834), (103, 208884), (156, 137917), (169, 127308), (206, 104442), (309, 69628), (338, 63654), (412, 52221), (507, 42436), (618, 34814), (676, 31827), (1014, 21218), (1236, 17407), (1339, 16068), (2028, 10609), (2678, 8034), (4017, 5356)]