81649638

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{563}}^1\times {\mathrm{1151}}^1$

素因数の和:1729

約数の個数: 48

約数和(自身を含む): 202715136

約数和(自身を除く): 121065498

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 563, 1126, 1151, 1689, 2302, 3378, 3453, 3941, 5067, 6906, 7882, 8057, 10134, 10359, 11823, 16114, 20718, 23646, 24171, 35469, 48342, 70938, 72513, 145026, 648013, 1296026, 1944039, 3888078, 4536091, 5832117, 9072182, 11664234, 13608273, 27216546, 40824819, 81649638]

約数ペア:

[(1, 81649638), (2, 40824819), (3, 27216546), (6, 13608273), (7, 11664234), (9, 9072182), (14, 5832117), (18, 4536091), (21, 3888078), (42, 1944039), (63, 1296026), (126, 648013), (563, 145026), (1126, 72513), (1151, 70938), (1689, 48342), (2302, 35469), (3378, 24171), (3453, 23646), (3941, 20718), (5067, 16114), (6906, 11823), (7882, 10359), (8057, 10134)]