20994216

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:626

約数の個数: 64

約数和(自身を含む): 55624320

約数和(自身を除く): 34630104

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 73, 92, 138, 146, 184, 219, 276, 292, 438, 521, 552, 584, 876, 1042, 1563, 1679, 1752, 2084, 3126, 3358, 4168, 5037, 6252, 6716, 10074, 11983, 12504, 13432, 20148, 23966, 35949, 38033, 40296, 47932, 71898, 76066, 95864, 114099, 143796, 152132, 228198, 287592, 304264, 456396, 874759, 912792, 1749518, 2624277, 3499036, 5248554, 6998072, 10497108, 20994216]

約数ペア:

[(1, 20994216), (2, 10497108), (3, 6998072), (4, 5248554), (6, 3499036), (8, 2624277), (12, 1749518), (23, 912792), (24, 874759), (46, 456396), (69, 304264), (73, 287592), (92, 228198), (138, 152132), (146, 143796), (184, 114099), (219, 95864), (276, 76066), (292, 71898), (438, 47932), (521, 40296), (552, 38033), (584, 35949), (876, 23966), (1042, 20148), (1563, 13432), (1679, 12504), (1752, 11983), (2084, 10074), (3126, 6716), (3358, 6252), (4168, 5037)]