21091628

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 41023584

約数和(自身を除く): 19931956

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 83, 101, 148, 166, 202, 332, 404, 629, 1258, 1411, 1717, 2516, 2822, 3071, 3434, 3737, 5644, 6142, 6868, 7474, 8383, 12284, 14948, 16766, 33532, 52207, 63529, 104414, 127058, 142511, 208828, 254116, 285022, 310171, 570044, 620342, 1240684, 5272907, 10545814, 21091628]

約数ペア:

[(1, 21091628), (2, 10545814), (4, 5272907), (17, 1240684), (34, 620342), (37, 570044), (68, 310171), (74, 285022), (83, 254116), (101, 208828), (148, 142511), (166, 127058), (202, 104414), (332, 63529), (404, 52207), (629, 33532), (1258, 16766), (1411, 14948), (1717, 12284), (2516, 8383), (2822, 7474), (3071, 6868), (3434, 6142), (3737, 5644)]