20923552

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 46069884

約数和(自身を除く): 25146332

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 73, 104, 106, 146, 169, 208, 212, 292, 338, 416, 424, 584, 676, 689, 848, 949, 1168, 1352, 1378, 1696, 1898, 2336, 2704, 2756, 3796, 3869, 5408, 5512, 7592, 7738, 8957, 11024, 12337, 15184, 15476, 17914, 22048, 24674, 30368, 30952, 35828, 49348, 50297, 61904, 71656, 98696, 100594, 123808, 143312, 197392, 201188, 286624, 394784, 402376, 653861, 804752, 1307722, 1609504, 2615444, 5230888, 10461776, 20923552]

約数ペア:

[(1, 20923552), (2, 10461776), (4, 5230888), (8, 2615444), (13, 1609504), (16, 1307722), (26, 804752), (32, 653861), (52, 402376), (53, 394784), (73, 286624), (104, 201188), (106, 197392), (146, 143312), (169, 123808), (208, 100594), (212, 98696), (292, 71656), (338, 61904), (416, 50297), (424, 49348), (584, 35828), (676, 30952), (689, 30368), (848, 24674), (949, 22048), (1168, 17914), (1352, 15476), (1378, 15184), (1696, 12337), (1898, 11024), (2336, 8957), (2704, 7738), (2756, 7592), (3796, 5512), (3869, 5408)]