257360480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123731}}^1$

素因数の和:123759

約数の個数: 48

約数和(自身を含む): 654789744

約数和(自身を除く): 397429264

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 123731, 247462, 494924, 618655, 989848, 1237310, 1608503, 1979696, 2474620, 3217006, 3959392, 4949240, 6434012, 8042515, 9898480, 12868024, 16085030, 19796960, 25736048, 32170060, 51472096, 64340120, 128680240, 257360480]

約数ペア:

[(1, 257360480), (2, 128680240), (4, 64340120), (5, 51472096), (8, 32170060), (10, 25736048), (13, 19796960), (16, 16085030), (20, 12868024), (26, 9898480), (32, 8042515), (40, 6434012), (52, 4949240), (65, 3959392), (80, 3217006), (104, 2474620), (130, 1979696), (160, 1608503), (208, 1237310), (260, 989848), (416, 618655), (520, 494924), (1040, 247462), (2080, 123731)]