20210936680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{646957}}^1$

素因数の和:647050

約数の個数: 64

約数和(自身を含む): 50307454080

約数和(自身を除く): 30096517400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2840, 3124, 3905, 6248, 7810, 15620, 31240, 646957, 1293914, 2587828, 3234785, 5175656, 6469570, 7116527, 12939140, 14233054, 25878280, 28466108, 35582635, 45933947, 56932216, 71165270, 91867894, 142330540, 183735788, 229669735, 284661080, 367471576, 459339470, 505273417, 918678940, 1010546834, 1837357880, 2021093668, 2526367085, 4042187336, 5052734170, 10105468340, 20210936680]

約数ペア:

[(1, 20210936680), (2, 10105468340), (4, 5052734170), (5, 4042187336), (8, 2526367085), (10, 2021093668), (11, 1837357880), (20, 1010546834), (22, 918678940), (40, 505273417), (44, 459339470), (55, 367471576), (71, 284661080), (88, 229669735), (110, 183735788), (142, 142330540), (220, 91867894), (284, 71165270), (355, 56932216), (440, 45933947), (568, 35582635), (710, 28466108), (781, 25878280), (1420, 14233054), (1562, 12939140), (2840, 7116527), (3124, 6469570), (3905, 5175656), (6248, 3234785), (7810, 2587828), (15620, 1293914), (31240, 646957)]