126123920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{701}}^1$

素因数の和:900

約数の個数: 80

約数和(自身を含む): 318073392

約数和(自身を除く): 191949472

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 173, 208, 260, 346, 520, 692, 701, 865, 1040, 1384, 1402, 1730, 2249, 2768, 2804, 3460, 3505, 4498, 5608, 6920, 7010, 8996, 9113, 11216, 11245, 13840, 14020, 17992, 18226, 22490, 28040, 35984, 36452, 44980, 45565, 56080, 72904, 89960, 91130, 121273, 145808, 179920, 182260, 242546, 364520, 485092, 606365, 729040, 970184, 1212730, 1576549, 1940368, 2425460, 3153098, 4850920, 6306196, 7882745, 9701840, 12612392, 15765490, 25224784, 31530980, 63061960, 126123920]

約数ペア:

[(1, 126123920), (2, 63061960), (4, 31530980), (5, 25224784), (8, 15765490), (10, 12612392), (13, 9701840), (16, 7882745), (20, 6306196), (26, 4850920), (40, 3153098), (52, 2425460), (65, 1940368), (80, 1576549), (104, 1212730), (130, 970184), (173, 729040), (208, 606365), (260, 485092), (346, 364520), (520, 242546), (692, 182260), (701, 179920), (865, 145808), (1040, 121273), (1384, 91130), (1402, 89960), (1730, 72904), (2249, 56080), (2768, 45565), (2804, 44980), (3460, 36452), (3505, 35984), (4498, 28040), (5608, 22490), (6920, 18226), (7010, 17992), (8996, 14020), (9113, 13840), (11216, 11245)]