19928216

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 49986720

約数和(自身を除く): 30058504

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 121, 136, 154, 173, 187, 238, 242, 308, 346, 374, 476, 484, 616, 692, 748, 847, 952, 968, 1211, 1309, 1384, 1496, 1694, 1903, 2057, 2422, 2618, 2941, 3388, 3806, 4114, 4844, 5236, 5882, 6776, 7612, 8228, 9688, 10472, 11764, 13321, 14399, 15224, 16456, 20587, 20933, 23528, 26642, 28798, 32351, 41174, 41866, 53284, 57596, 64702, 82348, 83732, 106568, 115192, 129404, 146531, 164696, 167464, 226457, 258808, 293062, 355861, 452914, 586124, 711722, 905828, 1172248, 1423444, 1811656, 2491027, 2846888, 4982054, 9964108, 19928216]

約数ペア:

[(1, 19928216), (2, 9964108), (4, 4982054), (7, 2846888), (8, 2491027), (11, 1811656), (14, 1423444), (17, 1172248), (22, 905828), (28, 711722), (34, 586124), (44, 452914), (56, 355861), (68, 293062), (77, 258808), (88, 226457), (119, 167464), (121, 164696), (136, 146531), (154, 129404), (173, 115192), (187, 106568), (238, 83732), (242, 82348), (308, 64702), (346, 57596), (374, 53284), (476, 41866), (484, 41174), (616, 32351), (692, 28798), (748, 26642), (847, 23528), (952, 20933), (968, 20587), (1211, 16456), (1309, 15224), (1384, 14399), (1496, 13321), (1694, 11764), (1903, 10472), (2057, 9688), (2422, 8228), (2618, 7612), (2941, 6776), (3388, 5882), (3806, 5236), (4114, 4844)]