81276940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1621}}^1$

素因数の和:1762

約数の個数: 48

約数和(自身を含む): 179847360

約数和(自身を除く): 98570420

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 109, 115, 218, 230, 436, 460, 545, 1090, 1621, 2180, 2507, 3242, 5014, 6484, 8105, 10028, 12535, 16210, 25070, 32420, 37283, 50140, 74566, 149132, 176689, 186415, 353378, 372830, 706756, 745660, 883445, 1766890, 3533780, 4063847, 8127694, 16255388, 20319235, 40638470, 81276940]

約数ペア:

[(1, 81276940), (2, 40638470), (4, 20319235), (5, 16255388), (10, 8127694), (20, 4063847), (23, 3533780), (46, 1766890), (92, 883445), (109, 745660), (115, 706756), (218, 372830), (230, 353378), (436, 186415), (460, 176689), (545, 149132), (1090, 74566), (1621, 50140), (2180, 37283), (2507, 32420), (3242, 25070), (5014, 16210), (6484, 12535), (8105, 10028)]