21003152

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 42231672

約数和(自身を除く): 21228520

約数列:

[1, 2, 4, 8, 16, 41, 82, 101, 164, 202, 317, 328, 404, 634, 656, 808, 1268, 1616, 2536, 4141, 5072, 8282, 12997, 16564, 25994, 32017, 33128, 51988, 64034, 66256, 103976, 128068, 207952, 256136, 512272, 1312697, 2625394, 5250788, 10501576, 21003152]

約数ペア:

[(1, 21003152), (2, 10501576), (4, 5250788), (8, 2625394), (16, 1312697), (41, 512272), (82, 256136), (101, 207952), (164, 128068), (202, 103976), (317, 66256), (328, 64034), (404, 51988), (634, 33128), (656, 32017), (808, 25994), (1268, 16564), (1616, 12997), (2536, 8282), (4141, 5072)]