20722310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 45425664

約数和(自身を除く): 24703354

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 61, 70, 115, 122, 161, 211, 230, 305, 322, 422, 427, 610, 805, 854, 1055, 1403, 1477, 1610, 2110, 2135, 2806, 2954, 4270, 4853, 7015, 7385, 9706, 9821, 12871, 14030, 14770, 19642, 24265, 25742, 33971, 48530, 49105, 64355, 67942, 90097, 98210, 128710, 169855, 180194, 296033, 339710, 450485, 592066, 900970, 1480165, 2072231, 2960330, 4144462, 10361155, 20722310]

約数ペア:

[(1, 20722310), (2, 10361155), (5, 4144462), (7, 2960330), (10, 2072231), (14, 1480165), (23, 900970), (35, 592066), (46, 450485), (61, 339710), (70, 296033), (115, 180194), (122, 169855), (161, 128710), (211, 98210), (230, 90097), (305, 67942), (322, 64355), (422, 49105), (427, 48530), (610, 33971), (805, 25742), (854, 24265), (1055, 19642), (1403, 14770), (1477, 14030), (1610, 12871), (2110, 9821), (2135, 9706), (2806, 7385), (2954, 7015), (4270, 4853)]