21709864

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 25464536

約数列:

[1, 2, 4, 8, 11, 22, 29, 44, 47, 58, 88, 94, 116, 181, 188, 232, 319, 362, 376, 517, 638, 724, 1034, 1276, 1363, 1448, 1991, 2068, 2552, 2726, 3982, 4136, 5249, 5452, 7964, 8507, 10498, 10904, 14993, 15928, 17014, 20996, 29986, 34028, 41992, 57739, 59972, 68056, 93577, 115478, 119944, 187154, 230956, 246703, 374308, 461912, 493406, 748616, 986812, 1973624, 2713733, 5427466, 10854932, 21709864]

約数ペア:

[(1, 21709864), (2, 10854932), (4, 5427466), (8, 2713733), (11, 1973624), (22, 986812), (29, 748616), (44, 493406), (47, 461912), (58, 374308), (88, 246703), (94, 230956), (116, 187154), (181, 119944), (188, 115478), (232, 93577), (319, 68056), (362, 59972), (376, 57739), (517, 41992), (638, 34028), (724, 29986), (1034, 20996), (1276, 17014), (1363, 15928), (1448, 14993), (1991, 10904), (2068, 10498), (2552, 8507), (2726, 7964), (3982, 5452), (4136, 5249)]