18071440

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{569}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 42195960

約数和(自身を除く): 24124520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 569, 794, 1138, 1588, 1985, 2276, 2845, 3176, 3970, 4552, 5690, 6352, 7940, 9104, 11380, 15880, 22760, 31760, 45520, 225893, 451786, 903572, 1129465, 1807144, 2258930, 3614288, 4517860, 9035720, 18071440]

約数ペア:

[(1, 18071440), (2, 9035720), (4, 4517860), (5, 3614288), (8, 2258930), (10, 1807144), (16, 1129465), (20, 903572), (40, 451786), (80, 225893), (397, 45520), (569, 31760), (794, 22760), (1138, 15880), (1588, 11380), (1985, 9104), (2276, 7940), (2845, 6352), (3176, 5690), (3970, 4552)]