19720404

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2661

約数の個数: 72

約数和(自身を含む): 57264480

約数和(自身を除く): 37544076

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 114, 132, 171, 198, 209, 228, 342, 396, 418, 627, 684, 836, 1254, 1881, 2508, 2621, 3762, 5242, 7524, 7863, 10484, 15726, 23589, 28831, 31452, 47178, 49799, 57662, 86493, 94356, 99598, 115324, 149397, 172986, 199196, 259479, 298794, 345972, 448191, 518958, 547789, 597588, 896382, 1037916, 1095578, 1643367, 1792764, 2191156, 3286734, 4930101, 6573468, 9860202, 19720404]

約数ペア:

[(1, 19720404), (2, 9860202), (3, 6573468), (4, 4930101), (6, 3286734), (9, 2191156), (11, 1792764), (12, 1643367), (18, 1095578), (19, 1037916), (22, 896382), (33, 597588), (36, 547789), (38, 518958), (44, 448191), (57, 345972), (66, 298794), (76, 259479), (99, 199196), (114, 172986), (132, 149397), (171, 115324), (198, 99598), (209, 94356), (228, 86493), (342, 57662), (396, 49799), (418, 47178), (627, 31452), (684, 28831), (836, 23589), (1254, 15726), (1881, 10484), (2508, 7863), (2621, 7524), (3762, 5242)]