20437768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10343}}^1$

素因数の和:10381

約数の個数: 32

約数和(自身を含む): 43444800

約数和(自身を除く): 23007032

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10343, 20686, 41372, 82744, 134459, 196517, 268918, 393034, 537836, 786068, 1075672, 1572136, 2554721, 5109442, 10218884, 20437768]

約数ペア:

[(1, 20437768), (2, 10218884), (4, 5109442), (8, 2554721), (13, 1572136), (19, 1075672), (26, 786068), (38, 537836), (52, 393034), (76, 268918), (104, 196517), (152, 134459), (247, 82744), (494, 41372), (988, 20686), (1976, 10343)]