21845725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 32230080

約数和(自身を除く): 10384355

約数列:

[1, 5, 11, 19, 25, 37, 55, 95, 113, 185, 209, 275, 407, 475, 565, 703, 925, 1045, 1243, 2035, 2147, 2825, 3515, 4181, 5225, 6215, 7733, 10175, 10735, 17575, 20905, 23617, 31075, 38665, 45991, 53675, 79439, 104525, 118085, 193325, 229955, 397195, 590425, 873829, 1149775, 1985975, 4369145, 21845725]

約数ペア:

[(1, 21845725), (5, 4369145), (11, 1985975), (19, 1149775), (25, 873829), (37, 590425), (55, 397195), (95, 229955), (113, 193325), (185, 118085), (209, 104525), (275, 79439), (407, 53675), (475, 45991), (565, 38665), (703, 31075), (925, 23617), (1045, 20905), (1243, 17575), (2035, 10735), (2147, 10175), (2825, 7733), (3515, 6215), (4181, 5225)]