1320800

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:160

約数の個数: 72

約数和(自身を含む): 3499776

約数和(自身を除く): 2178976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 127, 130, 160, 200, 208, 254, 260, 325, 400, 416, 508, 520, 635, 650, 800, 1016, 1040, 1270, 1300, 1651, 2032, 2080, 2540, 2600, 3175, 3302, 4064, 5080, 5200, 6350, 6604, 8255, 10160, 10400, 12700, 13208, 16510, 20320, 25400, 26416, 33020, 41275, 50800, 52832, 66040, 82550, 101600, 132080, 165100, 264160, 330200, 660400, 1320800]

約数ペア:

[(1, 1320800), (2, 660400), (4, 330200), (5, 264160), (8, 165100), (10, 132080), (13, 101600), (16, 82550), (20, 66040), (25, 52832), (26, 50800), (32, 41275), (40, 33020), (50, 26416), (52, 25400), (65, 20320), (80, 16510), (100, 13208), (104, 12700), (127, 10400), (130, 10160), (160, 8255), (200, 6604), (208, 6350), (254, 5200), (260, 5080), (325, 4064), (400, 3302), (416, 3175), (508, 2600), (520, 2540), (635, 2080), (650, 2032), (800, 1651), (1016, 1300), (1040, 1270)]