20805216425

素因数分解:

$5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{7457}}^1$

素因数の和:7730

約数の個数: 48

約数和(自身を含む): 29963260800

約数和(自身を除く): 9158044375

約数列:

[1, 5, 7, 25, 35, 107, 149, 175, 535, 745, 749, 1043, 2675, 3725, 3745, 5215, 7457, 15943, 18725, 26075, 37285, 52199, 79715, 111601, 186425, 260995, 398575, 558005, 797899, 1111093, 1304975, 2790025, 3989495, 5555465, 5585293, 7777651, 19947475, 27777325, 27926465, 38888255, 118886951, 139632325, 194441275, 594434755, 832208657, 2972173775, 4161043285, 20805216425]

約数ペア:

[(1, 20805216425), (5, 4161043285), (7, 2972173775), (25, 832208657), (35, 594434755), (107, 194441275), (149, 139632325), (175, 118886951), (535, 38888255), (745, 27926465), (749, 27777325), (1043, 19947475), (2675, 7777651), (3725, 5585293), (3745, 5555465), (5215, 3989495), (7457, 2790025), (15943, 1304975), (18725, 1111093), (26075, 797899), (37285, 558005), (52199, 398575), (79715, 260995), (111601, 186425)]