20909784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1753}}^1$

素因数の和:1840

約数の個数: 64

約数和(自身を含む): 60618240

約数和(自身を除く): 39708456

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 71, 84, 142, 168, 213, 284, 426, 497, 568, 852, 994, 1491, 1704, 1753, 1988, 2982, 3506, 3976, 5259, 5964, 7012, 10518, 11928, 12271, 14024, 21036, 24542, 36813, 42072, 49084, 73626, 98168, 124463, 147252, 248926, 294504, 373389, 497852, 746778, 871241, 995704, 1493556, 1742482, 2613723, 2987112, 3484964, 5227446, 6969928, 10454892, 20909784]

約数ペア:

[(1, 20909784), (2, 10454892), (3, 6969928), (4, 5227446), (6, 3484964), (7, 2987112), (8, 2613723), (12, 1742482), (14, 1493556), (21, 995704), (24, 871241), (28, 746778), (42, 497852), (56, 373389), (71, 294504), (84, 248926), (142, 147252), (168, 124463), (213, 98168), (284, 73626), (426, 49084), (497, 42072), (568, 36813), (852, 24542), (994, 21036), (1491, 14024), (1704, 12271), (1753, 11928), (1988, 10518), (2982, 7012), (3506, 5964), (3976, 5259)]