20990520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:509

約数の個数: 96

約数和(自身を含む): 68796000

約数和(自身を除く): 47805480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 199, 293, 360, 398, 586, 597, 796, 879, 995, 1172, 1194, 1465, 1592, 1758, 1791, 1990, 2344, 2388, 2637, 2930, 2985, 3516, 3582, 3980, 4395, 4776, 5274, 5860, 5970, 7032, 7164, 7960, 8790, 8955, 10548, 11720, 11940, 13185, 14328, 17580, 17910, 21096, 23880, 26370, 35160, 35820, 52740, 58307, 71640, 105480, 116614, 174921, 233228, 291535, 349842, 466456, 524763, 583070, 699684, 874605, 1049526, 1166140, 1399368, 1749210, 2099052, 2332280, 2623815, 3498420, 4198104, 5247630, 6996840, 10495260, 20990520]

約数ペア:

[(1, 20990520), (2, 10495260), (3, 6996840), (4, 5247630), (5, 4198104), (6, 3498420), (8, 2623815), (9, 2332280), (10, 2099052), (12, 1749210), (15, 1399368), (18, 1166140), (20, 1049526), (24, 874605), (30, 699684), (36, 583070), (40, 524763), (45, 466456), (60, 349842), (72, 291535), (90, 233228), (120, 174921), (180, 116614), (199, 105480), (293, 71640), (360, 58307), (398, 52740), (586, 35820), (597, 35160), (796, 26370), (879, 23880), (995, 21096), (1172, 17910), (1194, 17580), (1465, 14328), (1592, 13185), (1758, 11940), (1791, 11720), (1990, 10548), (2344, 8955), (2388, 8790), (2637, 7960), (2930, 7164), (2985, 7032), (3516, 5970), (3582, 5860), (3980, 5274), (4395, 4776)]