21000223232

素因数分解:

$2^9\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{25117}}^1$

素因数の和:25229

約数の個数: 80

約数和(自身を含む): 44402193792

約数和(自身を除く): 23401970560

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 71, 92, 128, 142, 184, 256, 284, 368, 512, 568, 736, 1136, 1472, 1633, 2272, 2944, 3266, 4544, 5888, 6532, 9088, 11776, 13064, 18176, 25117, 26128, 36352, 50234, 52256, 100468, 104512, 200936, 209024, 401872, 418048, 577691, 803744, 836096, 1155382, 1607488, 1783307, 2310764, 3214976, 3566614, 4621528, 6429952, 7133228, 9243056, 12859904, 14266456, 18486112, 28532912, 36972224, 41016061, 57065824, 73944448, 82032122, 114131648, 147888896, 164064244, 228263296, 295777792, 328128488, 456526592, 656256976, 913053184, 1312513952, 2625027904, 5250055808, 10500111616, 21000223232]

約数ペア:

[(1, 21000223232), (2, 10500111616), (4, 5250055808), (8, 2625027904), (16, 1312513952), (23, 913053184), (32, 656256976), (46, 456526592), (64, 328128488), (71, 295777792), (92, 228263296), (128, 164064244), (142, 147888896), (184, 114131648), (256, 82032122), (284, 73944448), (368, 57065824), (512, 41016061), (568, 36972224), (736, 28532912), (1136, 18486112), (1472, 14266456), (1633, 12859904), (2272, 9243056), (2944, 7133228), (3266, 6429952), (4544, 4621528), (5888, 3566614), (6532, 3214976), (9088, 2310764), (11776, 1783307), (13064, 1607488), (18176, 1155382), (25117, 836096), (26128, 803744), (36352, 577691), (50234, 418048), (52256, 401872), (100468, 209024), (104512, 200936)]