88978640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12497}}^1$

素因数の和:12599

約数の個数: 40

約数和(自身を含む): 209216520

約数和(自身を除く): 120237880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 12497, 24994, 49988, 62485, 99976, 124970, 199952, 249940, 499880, 999760, 1112233, 2224466, 4448932, 5561165, 8897864, 11122330, 17795728, 22244660, 44489320, 88978640]

約数ペア:

[(1, 88978640), (2, 44489320), (4, 22244660), (5, 17795728), (8, 11122330), (10, 8897864), (16, 5561165), (20, 4448932), (40, 2224466), (80, 1112233), (89, 999760), (178, 499880), (356, 249940), (445, 199952), (712, 124970), (890, 99976), (1424, 62485), (1780, 49988), (3560, 24994), (7120, 12497)]