205777790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 404870400

約数和(自身を除く): 199092610

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 89, 95, 178, 190, 215, 283, 430, 445, 566, 817, 890, 1415, 1634, 1691, 2830, 3382, 3827, 4085, 5377, 7654, 8170, 8455, 10754, 12169, 16910, 19135, 24338, 25187, 26885, 38270, 50374, 53770, 60845, 72713, 121690, 125935, 145426, 231211, 251870, 363565, 462422, 478553, 727130, 957106, 1083041, 1156055, 2166082, 2312110, 2392765, 4785530, 5415205, 10830410, 20577779, 41155558, 102888895, 205777790]

約数ペア:

[(1, 205777790), (2, 102888895), (5, 41155558), (10, 20577779), (19, 10830410), (38, 5415205), (43, 4785530), (86, 2392765), (89, 2312110), (95, 2166082), (178, 1156055), (190, 1083041), (215, 957106), (283, 727130), (430, 478553), (445, 462422), (566, 363565), (817, 251870), (890, 231211), (1415, 145426), (1634, 125935), (1691, 121690), (2830, 72713), (3382, 60845), (3827, 53770), (4085, 50374), (5377, 38270), (7654, 26885), (8170, 25187), (8455, 24338), (10754, 19135), (12169, 16910)]