81277340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{863}}^1$

素因数の和:1166

約数の個数: 48

約数和(自身を含む): 181585152

約数和(自身を除く): 100307812

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 277, 340, 554, 863, 1108, 1385, 1726, 2770, 3452, 4315, 4709, 5540, 8630, 9418, 14671, 17260, 18836, 23545, 29342, 47090, 58684, 73355, 94180, 146710, 239051, 293420, 478102, 956204, 1195255, 2390510, 4063867, 4781020, 8127734, 16255468, 20319335, 40638670, 81277340]

約数ペア:

[(1, 81277340), (2, 40638670), (4, 20319335), (5, 16255468), (10, 8127734), (17, 4781020), (20, 4063867), (34, 2390510), (68, 1195255), (85, 956204), (170, 478102), (277, 293420), (340, 239051), (554, 146710), (863, 94180), (1108, 73355), (1385, 58684), (1726, 47090), (2770, 29342), (3452, 23545), (4315, 18836), (4709, 17260), (5540, 14671), (8630, 9418)]