21136856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1217}}^1$

素因数の和:1403

約数の個数: 32

約数和(自身を含む): 42971040

約数和(自身を除く): 21834184

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 167, 334, 668, 1217, 1336, 2171, 2434, 4342, 4868, 8684, 9736, 15821, 17368, 31642, 63284, 126568, 203239, 406478, 812956, 1625912, 2642107, 5284214, 10568428, 21136856]

約数ペア:

[(1, 21136856), (2, 10568428), (4, 5284214), (8, 2642107), (13, 1625912), (26, 812956), (52, 406478), (104, 203239), (167, 126568), (334, 63284), (668, 31642), (1217, 17368), (1336, 15821), (2171, 9736), (2434, 8684), (4342, 4868)]