129024040

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 297198720

約数和(自身を除く): 168174680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 181, 251, 284, 355, 362, 502, 568, 710, 724, 905, 1004, 1255, 1420, 1448, 1810, 2008, 2510, 2840, 3620, 5020, 7240, 10040, 12851, 17821, 25702, 35642, 45431, 51404, 64255, 71284, 89105, 90862, 102808, 128510, 142568, 178210, 181724, 227155, 257020, 356420, 363448, 454310, 514040, 712840, 908620, 1817240, 3225601, 6451202, 12902404, 16128005, 25804808, 32256010, 64512020, 129024040]

約数ペア:

[(1, 129024040), (2, 64512020), (4, 32256010), (5, 25804808), (8, 16128005), (10, 12902404), (20, 6451202), (40, 3225601), (71, 1817240), (142, 908620), (181, 712840), (251, 514040), (284, 454310), (355, 363448), (362, 356420), (502, 257020), (568, 227155), (710, 181724), (724, 178210), (905, 142568), (1004, 128510), (1255, 102808), (1420, 90862), (1448, 89105), (1810, 71284), (2008, 64255), (2510, 51404), (2840, 45431), (3620, 35642), (5020, 25702), (7240, 17821), (10040, 12851)]