21638872

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4909}}^1$

素因数の和:4963

約数の個数: 32

約数和(自身を含む): 44190000

約数和(自身を除く): 22551128

約数列:

[1, 2, 4, 8, 19, 29, 38, 58, 76, 116, 152, 232, 551, 1102, 2204, 4408, 4909, 9818, 19636, 39272, 93271, 142361, 186542, 284722, 373084, 569444, 746168, 1138888, 2704859, 5409718, 10819436, 21638872]

約数ペア:

[(1, 21638872), (2, 10819436), (4, 5409718), (8, 2704859), (19, 1138888), (29, 746168), (38, 569444), (58, 373084), (76, 284722), (116, 186542), (152, 142361), (232, 93271), (551, 39272), (1102, 19636), (2204, 9818), (4408, 4909)]