21531276

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{3539}}^1$

素因数の和:3575

約数の個数: 54

約数和(自身を含む): 58951620

約数和(自身を除く): 37420344

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 338, 468, 507, 676, 1014, 1521, 2028, 3042, 3539, 6084, 7078, 10617, 14156, 21234, 31851, 42468, 46007, 63702, 92014, 127404, 138021, 184028, 276042, 414063, 552084, 598091, 828126, 1196182, 1656252, 1794273, 2392364, 3588546, 5382819, 7177092, 10765638, 21531276]

約数ペア:

[(1, 21531276), (2, 10765638), (3, 7177092), (4, 5382819), (6, 3588546), (9, 2392364), (12, 1794273), (13, 1656252), (18, 1196182), (26, 828126), (36, 598091), (39, 552084), (52, 414063), (78, 276042), (117, 184028), (156, 138021), (169, 127404), (234, 92014), (338, 63702), (468, 46007), (507, 42468), (676, 31851), (1014, 21234), (1521, 14156), (2028, 10617), (3042, 7078), (3539, 6084)]