21997014

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 51274944

約数和(自身を除く): 29277930

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 53, 78, 102, 106, 159, 221, 313, 318, 442, 626, 663, 689, 901, 939, 1326, 1378, 1802, 1878, 2067, 2703, 4069, 4134, 5321, 5406, 8138, 10642, 11713, 12207, 15963, 16589, 23426, 24414, 31926, 33178, 35139, 49767, 69173, 70278, 99534, 138346, 207519, 215657, 282013, 415038, 431314, 564026, 646971, 846039, 1293942, 1692078, 3666169, 7332338, 10998507, 21997014]

約数ペア:

[(1, 21997014), (2, 10998507), (3, 7332338), (6, 3666169), (13, 1692078), (17, 1293942), (26, 846039), (34, 646971), (39, 564026), (51, 431314), (53, 415038), (78, 282013), (102, 215657), (106, 207519), (159, 138346), (221, 99534), (313, 70278), (318, 69173), (442, 49767), (626, 35139), (663, 33178), (689, 31926), (901, 24414), (939, 23426), (1326, 16589), (1378, 15963), (1802, 12207), (1878, 11713), (2067, 10642), (2703, 8138), (4069, 5406), (4134, 5321)]