21490190988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{910447}}^1$

素因数の和:910742

約数の個数: 48

約数和(自身を含む): 57511179264

約数和(自身を除く): 36020988276

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 281, 562, 843, 1124, 1686, 1967, 3372, 3934, 5901, 7868, 11802, 23604, 910447, 1820894, 2731341, 3641788, 5462682, 6373129, 10925364, 12746258, 19119387, 25492516, 38238774, 76477548, 255835607, 511671214, 767506821, 1023342428, 1535013642, 1790849249, 3070027284, 3581698498, 5372547747, 7163396996, 10745095494, 21490190988]

約数ペア:

[(1, 21490190988), (2, 10745095494), (3, 7163396996), (4, 5372547747), (6, 3581698498), (7, 3070027284), (12, 1790849249), (14, 1535013642), (21, 1023342428), (28, 767506821), (42, 511671214), (84, 255835607), (281, 76477548), (562, 38238774), (843, 25492516), (1124, 19119387), (1686, 12746258), (1967, 10925364), (3372, 6373129), (3934, 5462682), (5901, 3641788), (7868, 2731341), (11802, 1820894), (23604, 910447)]