21987816

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:746

約数の個数: 64

約数和(自身を含む): 58389120

約数和(自身を除く): 36401304

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 61, 69, 92, 122, 138, 183, 184, 244, 276, 366, 488, 552, 653, 732, 1306, 1403, 1464, 1959, 2612, 2806, 3918, 4209, 5224, 5612, 7836, 8418, 11224, 15019, 15672, 16836, 30038, 33672, 39833, 45057, 60076, 79666, 90114, 119499, 120152, 159332, 180228, 238998, 318664, 360456, 477996, 916159, 955992, 1832318, 2748477, 3664636, 5496954, 7329272, 10993908, 21987816]

約数ペア:

[(1, 21987816), (2, 10993908), (3, 7329272), (4, 5496954), (6, 3664636), (8, 2748477), (12, 1832318), (23, 955992), (24, 916159), (46, 477996), (61, 360456), (69, 318664), (92, 238998), (122, 180228), (138, 159332), (183, 120152), (184, 119499), (244, 90114), (276, 79666), (366, 60076), (488, 45057), (552, 39833), (653, 33672), (732, 30038), (1306, 16836), (1403, 15672), (1464, 15019), (1959, 11224), (2612, 8418), (2806, 7836), (3918, 5612), (4209, 5224)]