81881340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2129}}^1$

素因数の和:2782

約数の個数: 48

約数和(自身を含む): 229733280

約数和(自身を除く): 147851940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 641, 1282, 1923, 2129, 2564, 3205, 3846, 4258, 6387, 6410, 7692, 8516, 9615, 10645, 12774, 12820, 19230, 21290, 25548, 31935, 38460, 42580, 63870, 127740, 1364689, 2729378, 4094067, 5458756, 6823445, 8188134, 13646890, 16376268, 20470335, 27293780, 40940670, 81881340]

約数ペア:

[(1, 81881340), (2, 40940670), (3, 27293780), (4, 20470335), (5, 16376268), (6, 13646890), (10, 8188134), (12, 6823445), (15, 5458756), (20, 4094067), (30, 2729378), (60, 1364689), (641, 127740), (1282, 63870), (1923, 42580), (2129, 38460), (2564, 31935), (3205, 25548), (3846, 21290), (4258, 19230), (6387, 12820), (6410, 12774), (7692, 10645), (8516, 9615)]