20052175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9945905

約数列:

[1, 5, 11, 13, 25, 55, 65, 71, 79, 143, 275, 325, 355, 395, 715, 781, 869, 923, 1027, 1775, 1975, 3575, 3905, 4345, 4615, 5135, 5609, 10153, 11297, 19525, 21725, 23075, 25675, 28045, 50765, 56485, 61699, 72917, 140225, 253825, 282425, 308495, 364585, 802087, 1542475, 1822925, 4010435, 20052175]

約数ペア:

[(1, 20052175), (5, 4010435), (11, 1822925), (13, 1542475), (25, 802087), (55, 364585), (65, 308495), (71, 282425), (79, 253825), (143, 140225), (275, 72917), (325, 61699), (355, 56485), (395, 50765), (715, 28045), (781, 25675), (869, 23075), (923, 21725), (1027, 19525), (1775, 11297), (1975, 10153), (3575, 5609), (3905, 5135), (4345, 4615)]