20256945

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 37428480

約数和(自身を除く): 17171535

約数列:

[1, 3, 5, 15, 17, 19, 37, 51, 57, 85, 95, 111, 113, 185, 255, 285, 323, 339, 555, 565, 629, 703, 969, 1615, 1695, 1887, 1921, 2109, 2147, 3145, 3515, 4181, 4845, 5763, 6441, 9435, 9605, 10545, 10735, 11951, 12543, 20905, 28815, 32205, 35853, 36499, 59755, 62715, 71077, 79439, 109497, 179265, 182495, 213231, 238317, 355385, 397195, 547485, 1066155, 1191585, 1350463, 4051389, 6752315, 20256945]

約数ペア:

[(1, 20256945), (3, 6752315), (5, 4051389), (15, 1350463), (17, 1191585), (19, 1066155), (37, 547485), (51, 397195), (57, 355385), (85, 238317), (95, 213231), (111, 182495), (113, 179265), (185, 109497), (255, 79439), (285, 71077), (323, 62715), (339, 59755), (555, 36499), (565, 35853), (629, 32205), (703, 28815), (969, 20905), (1615, 12543), (1695, 11951), (1887, 10735), (1921, 10545), (2109, 9605), (2147, 9435), (3145, 6441), (3515, 5763), (4181, 4845)]