21508916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1213}}^1$

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 45685248

約数和(自身を除く): 24176332

約数列:

[1, 2, 4, 11, 13, 22, 26, 31, 44, 52, 62, 124, 143, 286, 341, 403, 572, 682, 806, 1213, 1364, 1612, 2426, 4433, 4852, 8866, 13343, 15769, 17732, 26686, 31538, 37603, 53372, 63076, 75206, 150412, 173459, 346918, 413633, 488839, 693836, 827266, 977678, 1654532, 1955356, 5377229, 10754458, 21508916]

約数ペア:

[(1, 21508916), (2, 10754458), (4, 5377229), (11, 1955356), (13, 1654532), (22, 977678), (26, 827266), (31, 693836), (44, 488839), (52, 413633), (62, 346918), (124, 173459), (143, 150412), (286, 75206), (341, 63076), (403, 53372), (572, 37603), (682, 31538), (806, 26686), (1213, 17732), (1364, 15769), (1612, 13343), (2426, 8866), (4433, 4852)]