20494448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2663}}^1$

素因数の和:2721

約数の個数: 40

約数和(自身を含む): 43934688

約数和(自身を除く): 23440240

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2663, 3848, 5326, 7696, 10652, 21304, 34619, 42608, 69238, 98531, 138476, 197062, 276952, 394124, 553904, 788248, 1280903, 1576496, 2561806, 5123612, 10247224, 20494448]

約数ペア:

[(1, 20494448), (2, 10247224), (4, 5123612), (8, 2561806), (13, 1576496), (16, 1280903), (26, 788248), (37, 553904), (52, 394124), (74, 276952), (104, 197062), (148, 138476), (208, 98531), (296, 69238), (481, 42608), (592, 34619), (962, 21304), (1924, 10652), (2663, 7696), (3848, 5326)]