20155472900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{69239}}^1$

素因数の和:69365

約数の個数: 72

約数和(自身を含む): 45435841920

約数和(自身を除く): 25280369020

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 71, 82, 100, 142, 164, 205, 284, 355, 410, 710, 820, 1025, 1420, 1775, 2050, 2911, 3550, 4100, 5822, 7100, 11644, 14555, 29110, 58220, 69239, 72775, 138478, 145550, 276956, 291100, 346195, 692390, 1384780, 1730975, 2838799, 3461950, 4915969, 5677598, 6923900, 9831938, 11355196, 14193995, 19663876, 24579845, 28387990, 49159690, 56775980, 70969975, 98319380, 122899225, 141939950, 201554729, 245798450, 283879900, 403109458, 491596900, 806218916, 1007773645, 2015547290, 4031094580, 5038868225, 10077736450, 20155472900]

約数ペア:

[(1, 20155472900), (2, 10077736450), (4, 5038868225), (5, 4031094580), (10, 2015547290), (20, 1007773645), (25, 806218916), (41, 491596900), (50, 403109458), (71, 283879900), (82, 245798450), (100, 201554729), (142, 141939950), (164, 122899225), (205, 98319380), (284, 70969975), (355, 56775980), (410, 49159690), (710, 28387990), (820, 24579845), (1025, 19663876), (1420, 14193995), (1775, 11355196), (2050, 9831938), (2911, 6923900), (3550, 5677598), (4100, 4915969), (5822, 3461950), (7100, 2838799), (11644, 1730975), (14555, 1384780), (29110, 692390), (58220, 346195), (69239, 291100), (72775, 276956), (138478, 145550)]