18561520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5659}}^1$

素因数の和:5713

約数の個数: 40

約数和(自身を含む): 44215920

約数和(自身を除く): 25654400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5659, 11318, 22636, 28295, 45272, 56590, 90544, 113180, 226360, 232019, 452720, 464038, 928076, 1160095, 1856152, 2320190, 3712304, 4640380, 9280760, 18561520]

約数ペア:

[(1, 18561520), (2, 9280760), (4, 4640380), (5, 3712304), (8, 2320190), (10, 1856152), (16, 1160095), (20, 928076), (40, 464038), (41, 452720), (80, 232019), (82, 226360), (164, 113180), (205, 90544), (328, 56590), (410, 45272), (656, 28295), (820, 22636), (1640, 11318), (3280, 5659)]