20586280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 56246400

約数和(自身を除く): 35660120

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 59, 61, 65, 88, 104, 110, 118, 122, 130, 143, 220, 236, 244, 260, 286, 295, 305, 440, 472, 488, 520, 572, 590, 610, 649, 671, 715, 767, 793, 1144, 1180, 1220, 1298, 1342, 1430, 1534, 1586, 2360, 2440, 2596, 2684, 2860, 3068, 3172, 3245, 3355, 3599, 3835, 3965, 5192, 5368, 5720, 6136, 6344, 6490, 6710, 7198, 7670, 7930, 8437, 8723, 12980, 13420, 14396, 15340, 15860, 16874, 17446, 17995, 25960, 26840, 28792, 30680, 31720, 33748, 34892, 35990, 39589, 42185, 43615, 46787, 67496, 69784, 71980, 79178, 84370, 87230, 93574, 143960, 158356, 168740, 174460, 187148, 197945, 233935, 316712, 337480, 348920, 374296, 395890, 467870, 514657, 791780, 935740, 1029314, 1583560, 1871480, 2058628, 2573285, 4117256, 5146570, 10293140, 20586280]

約数ペア:

[(1, 20586280), (2, 10293140), (4, 5146570), (5, 4117256), (8, 2573285), (10, 2058628), (11, 1871480), (13, 1583560), (20, 1029314), (22, 935740), (26, 791780), (40, 514657), (44, 467870), (52, 395890), (55, 374296), (59, 348920), (61, 337480), (65, 316712), (88, 233935), (104, 197945), (110, 187148), (118, 174460), (122, 168740), (130, 158356), (143, 143960), (220, 93574), (236, 87230), (244, 84370), (260, 79178), (286, 71980), (295, 69784), (305, 67496), (440, 46787), (472, 43615), (488, 42185), (520, 39589), (572, 35990), (590, 34892), (610, 33748), (649, 31720), (671, 30680), (715, 28792), (767, 26840), (793, 25960), (1144, 17995), (1180, 17446), (1220, 16874), (1298, 15860), (1342, 15340), (1430, 14396), (1534, 13420), (1586, 12980), (2360, 8723), (2440, 8437), (2596, 7930), (2684, 7670), (2860, 7198), (3068, 6710), (3172, 6490), (3245, 6344), (3355, 6136), (3599, 5720), (3835, 5368), (3965, 5192)]