20949828

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 29498556

約数列:

[1, 2, 3, 4, 6, 12, 67, 71, 134, 142, 201, 213, 268, 284, 367, 402, 426, 734, 804, 852, 1101, 1468, 2202, 4404, 4757, 9514, 14271, 19028, 24589, 26057, 28542, 49178, 52114, 57084, 73767, 78171, 98356, 104228, 147534, 156342, 295068, 312684, 1745819, 3491638, 5237457, 6983276, 10474914, 20949828]

約数ペア:

[(1, 20949828), (2, 10474914), (3, 6983276), (4, 5237457), (6, 3491638), (12, 1745819), (67, 312684), (71, 295068), (134, 156342), (142, 147534), (201, 104228), (213, 98356), (268, 78171), (284, 73767), (367, 57084), (402, 52114), (426, 49178), (734, 28542), (804, 26057), (852, 24589), (1101, 19028), (1468, 14271), (2202, 9514), (4404, 4757)]