26559380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{347}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 57879360

約数和(自身を除く): 31319980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 347, 356, 430, 445, 694, 860, 890, 1388, 1735, 1780, 3470, 3827, 6940, 7654, 14921, 15308, 19135, 29842, 30883, 38270, 59684, 61766, 74605, 76540, 123532, 149210, 154415, 298420, 308830, 617660, 1327969, 2655938, 5311876, 6639845, 13279690, 26559380]

約数ペア:

[(1, 26559380), (2, 13279690), (4, 6639845), (5, 5311876), (10, 2655938), (20, 1327969), (43, 617660), (86, 308830), (89, 298420), (172, 154415), (178, 149210), (215, 123532), (347, 76540), (356, 74605), (430, 61766), (445, 59684), (694, 38270), (860, 30883), (890, 29842), (1388, 19135), (1735, 15308), (1780, 14921), (3470, 7654), (3827, 6940)]