21663712

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5689}}^1$

素因数の和:5723

約数の個数: 48

約数和(自身を含む): 51619680

約数和(自身を除く): 29955968

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5689, 11378, 22756, 39823, 45512, 79646, 91024, 96713, 159292, 182048, 193426, 318584, 386852, 637168, 676991, 773704, 1274336, 1353982, 1547408, 2707964, 3094816, 5415928, 10831856, 21663712]

約数ペア:

[(1, 21663712), (2, 10831856), (4, 5415928), (7, 3094816), (8, 2707964), (14, 1547408), (16, 1353982), (17, 1274336), (28, 773704), (32, 676991), (34, 637168), (56, 386852), (68, 318584), (112, 193426), (119, 182048), (136, 159292), (224, 96713), (238, 91024), (272, 79646), (476, 45512), (544, 39823), (952, 22756), (1904, 11378), (3808, 5689)]