81451678

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{2213}}^1$

素因数の和:2472

約数の個数: 32

約数和(自身を含む): 153031680

約数和(自身を除く): 71580002

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 239, 478, 1673, 2213, 2629, 3346, 4426, 5258, 15491, 18403, 24343, 30982, 36806, 48686, 170401, 340802, 528907, 1057814, 3702349, 5817977, 7404698, 11635954, 40725839, 81451678]

約数ペア:

[(1, 81451678), (2, 40725839), (7, 11635954), (11, 7404698), (14, 5817977), (22, 3702349), (77, 1057814), (154, 528907), (239, 340802), (478, 170401), (1673, 48686), (2213, 36806), (2629, 30982), (3346, 24343), (4426, 18403), (5258, 15491)]