20439125

素因数分解:

$5^3\times 7^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 30730752

約数和(自身を除く): 10291627

約数列:

[1, 5, 7, 25, 35, 47, 49, 71, 125, 175, 235, 245, 329, 355, 497, 875, 1175, 1225, 1645, 1775, 2303, 2485, 3337, 3479, 5875, 6125, 8225, 8875, 11515, 12425, 16685, 17395, 23359, 41125, 57575, 62125, 83425, 86975, 116795, 163513, 287875, 417125, 434875, 583975, 817565, 2919875, 4087825, 20439125]

約数ペア:

[(1, 20439125), (5, 4087825), (7, 2919875), (25, 817565), (35, 583975), (47, 434875), (49, 417125), (71, 287875), (125, 163513), (175, 116795), (235, 86975), (245, 83425), (329, 62125), (355, 57575), (497, 41125), (875, 23359), (1175, 17395), (1225, 16685), (1645, 12425), (1775, 11515), (2303, 8875), (2485, 8225), (3337, 6125), (3479, 5875)]