20883960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:398

約数の個数: 128

約数和(自身を含む): 70977600

約数和(自身を除く): 50093640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 270, 305, 317, 360, 366, 488, 540, 549, 610, 634, 732, 915, 951, 1080, 1098, 1220, 1268, 1464, 1585, 1647, 1830, 1902, 2196, 2440, 2536, 2745, 2853, 3170, 3294, 3660, 3804, 4392, 4755, 5490, 5706, 6340, 6588, 7320, 7608, 8235, 8559, 9510, 10980, 11412, 12680, 13176, 14265, 16470, 17118, 19020, 19337, 21960, 22824, 28530, 32940, 34236, 38040, 38674, 42795, 57060, 58011, 65880, 68472, 77348, 85590, 96685, 114120, 116022, 154696, 171180, 174033, 193370, 232044, 290055, 342360, 348066, 386740, 464088, 522099, 580110, 696132, 773480, 870165, 1044198, 1160220, 1392264, 1740330, 2088396, 2320440, 2610495, 3480660, 4176792, 5220990, 6961320, 10441980, 20883960]

約数ペア:

[(1, 20883960), (2, 10441980), (3, 6961320), (4, 5220990), (5, 4176792), (6, 3480660), (8, 2610495), (9, 2320440), (10, 2088396), (12, 1740330), (15, 1392264), (18, 1160220), (20, 1044198), (24, 870165), (27, 773480), (30, 696132), (36, 580110), (40, 522099), (45, 464088), (54, 386740), (60, 348066), (61, 342360), (72, 290055), (90, 232044), (108, 193370), (120, 174033), (122, 171180), (135, 154696), (180, 116022), (183, 114120), (216, 96685), (244, 85590), (270, 77348), (305, 68472), (317, 65880), (360, 58011), (366, 57060), (488, 42795), (540, 38674), (549, 38040), (610, 34236), (634, 32940), (732, 28530), (915, 22824), (951, 21960), (1080, 19337), (1098, 19020), (1220, 17118), (1268, 16470), (1464, 14265), (1585, 13176), (1647, 12680), (1830, 11412), (1902, 10980), (2196, 9510), (2440, 8559), (2536, 8235), (2745, 7608), (2853, 7320), (3170, 6588), (3294, 6340), (3660, 5706), (3804, 5490), (4392, 4755)]