205259990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^3\times {\mathrm{53}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 418908672

約数和(自身を除く): 213648682

約数列:

[1, 2, 5, 10, 13, 26, 31, 53, 62, 65, 106, 130, 155, 265, 310, 403, 530, 689, 806, 961, 1378, 1643, 1922, 2015, 3286, 3445, 4030, 4805, 6890, 8215, 9610, 12493, 16430, 21359, 24986, 29791, 42718, 50933, 59582, 62465, 101866, 106795, 124930, 148955, 213590, 254665, 297910, 387283, 509330, 662129, 774566, 1324258, 1578923, 1936415, 3157846, 3310645, 3872830, 6621290, 7894615, 15789230, 20525999, 41051998, 102629995, 205259990]

約数ペア:

[(1, 205259990), (2, 102629995), (5, 41051998), (10, 20525999), (13, 15789230), (26, 7894615), (31, 6621290), (53, 3872830), (62, 3310645), (65, 3157846), (106, 1936415), (130, 1578923), (155, 1324258), (265, 774566), (310, 662129), (403, 509330), (530, 387283), (689, 297910), (806, 254665), (961, 213590), (1378, 148955), (1643, 124930), (1922, 106795), (2015, 101866), (3286, 62465), (3445, 59582), (4030, 50933), (4805, 42718), (6890, 29791), (8215, 24986), (9610, 21359), (12493, 16430)]