20972562

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 64

約数和(自身を含む): 47752320

約数和(自身を除く): 26779758

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 43, 74, 78, 86, 111, 129, 169, 222, 258, 338, 481, 507, 559, 962, 1014, 1118, 1443, 1591, 1677, 2197, 2886, 3182, 3354, 4394, 4773, 6253, 6591, 7267, 9546, 12506, 13182, 14534, 18759, 20683, 21801, 37518, 41366, 43602, 62049, 81289, 94471, 124098, 162578, 188942, 243867, 268879, 283413, 487734, 537758, 566826, 806637, 1613274, 3495427, 6990854, 10486281, 20972562]

約数ペア:

[(1, 20972562), (2, 10486281), (3, 6990854), (6, 3495427), (13, 1613274), (26, 806637), (37, 566826), (39, 537758), (43, 487734), (74, 283413), (78, 268879), (86, 243867), (111, 188942), (129, 162578), (169, 124098), (222, 94471), (258, 81289), (338, 62049), (481, 43602), (507, 41366), (559, 37518), (962, 21801), (1014, 20683), (1118, 18759), (1443, 14534), (1591, 13182), (1677, 12506), (2197, 9546), (2886, 7267), (3182, 6591), (3354, 6253), (4394, 4773)]