201739520

素因数分解:

$2^8\times 5^1\times {\mathrm{397}}^2$

素因数の和:815

約数の個数: 54

約数和(自身を含む): 484449462

約数和(自身を除く): 282709942

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 397, 640, 794, 1280, 1588, 1985, 3176, 3970, 6352, 7940, 12704, 15880, 25408, 31760, 50816, 63520, 101632, 127040, 157609, 254080, 315218, 508160, 630436, 788045, 1260872, 1576090, 2521744, 3152180, 5043488, 6304360, 10086976, 12608720, 20173952, 25217440, 40347904, 50434880, 100869760, 201739520]

約数ペア:

[(1, 201739520), (2, 100869760), (4, 50434880), (5, 40347904), (8, 25217440), (10, 20173952), (16, 12608720), (20, 10086976), (32, 6304360), (40, 5043488), (64, 3152180), (80, 2521744), (128, 1576090), (160, 1260872), (256, 788045), (320, 630436), (397, 508160), (640, 315218), (794, 254080), (1280, 157609), (1588, 127040), (1985, 101632), (3176, 63520), (3970, 50816), (6352, 31760), (7940, 25408), (12704, 15880)]