21784906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 40709088

約数和(自身を除く): 18924182

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 143, 209, 211, 247, 286, 361, 418, 422, 494, 722, 2321, 2717, 2743, 3971, 4009, 4642, 4693, 5434, 5486, 7942, 8018, 9386, 30173, 44099, 51623, 52117, 60346, 76171, 88198, 103246, 104234, 152342, 573287, 837881, 990223, 1146574, 1675762, 1980446, 10892453, 21784906]

約数ペア:

[(1, 21784906), (2, 10892453), (11, 1980446), (13, 1675762), (19, 1146574), (22, 990223), (26, 837881), (38, 573287), (143, 152342), (209, 104234), (211, 103246), (247, 88198), (286, 76171), (361, 60346), (418, 52117), (422, 51623), (494, 44099), (722, 30173), (2321, 9386), (2717, 8018), (2743, 7942), (3971, 5486), (4009, 5434), (4642, 4693)]