645040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{733}}^1$

素因数の和:757

約数の個数: 40

約数和(自身を含む): 1638288

約数和(自身を除く): 993248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 733, 880, 1466, 2932, 3665, 5864, 7330, 8063, 11728, 14660, 16126, 29320, 32252, 40315, 58640, 64504, 80630, 129008, 161260, 322520, 645040]

約数ペア:

[(1, 645040), (2, 322520), (4, 161260), (5, 129008), (8, 80630), (10, 64504), (11, 58640), (16, 40315), (20, 32252), (22, 29320), (40, 16126), (44, 14660), (55, 11728), (80, 8063), (88, 7330), (110, 5864), (176, 3665), (220, 2932), (440, 1466), (733, 880)]