21022340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{827}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 46738944

約数和(自身を除く): 25716604

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 827, 1271, 1654, 2542, 3308, 4135, 5084, 6355, 8270, 12710, 16540, 25420, 25637, 33907, 51274, 67814, 102548, 128185, 135628, 169535, 256370, 339070, 512740, 678140, 1051117, 2102234, 4204468, 5255585, 10511170, 21022340]

約数ペア:

[(1, 21022340), (2, 10511170), (4, 5255585), (5, 4204468), (10, 2102234), (20, 1051117), (31, 678140), (41, 512740), (62, 339070), (82, 256370), (124, 169535), (155, 135628), (164, 128185), (205, 102548), (310, 67814), (410, 51274), (620, 33907), (820, 25637), (827, 25420), (1271, 16540), (1654, 12710), (2542, 8270), (3308, 6355), (4135, 5084)]