28311250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:133

約数の個数: 80

約数和(自身を含む): 60730560

約数和(自身を除く): 32419310

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 71, 110, 125, 142, 145, 250, 275, 290, 319, 355, 550, 625, 638, 710, 725, 781, 1250, 1375, 1450, 1562, 1595, 1775, 2059, 2750, 3190, 3550, 3625, 3905, 4118, 6875, 7250, 7810, 7975, 8875, 10295, 13750, 15950, 17750, 18125, 19525, 20590, 22649, 36250, 39050, 39875, 44375, 45298, 51475, 79750, 88750, 97625, 102950, 113245, 195250, 199375, 226490, 257375, 398750, 488125, 514750, 566225, 976250, 1132450, 1286875, 2573750, 2831125, 5662250, 14155625, 28311250]

約数ペア:

[(1, 28311250), (2, 14155625), (5, 5662250), (10, 2831125), (11, 2573750), (22, 1286875), (25, 1132450), (29, 976250), (50, 566225), (55, 514750), (58, 488125), (71, 398750), (110, 257375), (125, 226490), (142, 199375), (145, 195250), (250, 113245), (275, 102950), (290, 97625), (319, 88750), (355, 79750), (550, 51475), (625, 45298), (638, 44375), (710, 39875), (725, 39050), (781, 36250), (1250, 22649), (1375, 20590), (1450, 19525), (1562, 18125), (1595, 17750), (1775, 15950), (2059, 13750), (2750, 10295), (3190, 8875), (3550, 7975), (3625, 7810), (3905, 7250), (4118, 6875)]