20509902

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1871}}^1$

素因数の和:1918

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 33403698

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 29, 42, 54, 58, 63, 87, 126, 174, 189, 203, 261, 378, 406, 522, 609, 783, 1218, 1566, 1827, 1871, 3654, 3742, 5481, 5613, 10962, 11226, 13097, 16839, 26194, 33678, 39291, 50517, 54259, 78582, 101034, 108518, 117873, 162777, 235746, 325554, 353619, 379813, 488331, 707238, 759626, 976662, 1139439, 1464993, 2278878, 2929986, 3418317, 6836634, 10254951, 20509902]

約数ペア:

[(1, 20509902), (2, 10254951), (3, 6836634), (6, 3418317), (7, 2929986), (9, 2278878), (14, 1464993), (18, 1139439), (21, 976662), (27, 759626), (29, 707238), (42, 488331), (54, 379813), (58, 353619), (63, 325554), (87, 235746), (126, 162777), (174, 117873), (189, 108518), (203, 101034), (261, 78582), (378, 54259), (406, 50517), (522, 39291), (609, 33678), (783, 26194), (1218, 16839), (1566, 13097), (1827, 11226), (1871, 10962), (3654, 5613), (3742, 5481)]