18749744

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{827}}^1$

素因数の和:957

約数の個数: 40

約数和(自身を含む): 39528720

約数和(自身を除く): 20778976

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 827, 872, 1417, 1654, 1744, 2834, 3308, 5668, 6616, 10751, 11336, 13232, 21502, 22672, 43004, 86008, 90143, 172016, 180286, 360572, 721144, 1171859, 1442288, 2343718, 4687436, 9374872, 18749744]

約数ペア:

[(1, 18749744), (2, 9374872), (4, 4687436), (8, 2343718), (13, 1442288), (16, 1171859), (26, 721144), (52, 360572), (104, 180286), (109, 172016), (208, 90143), (218, 86008), (436, 43004), (827, 22672), (872, 21502), (1417, 13232), (1654, 11336), (1744, 10751), (2834, 6616), (3308, 5668)]