7801980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7649}}^1$

素因数の和:7678

約数の個数: 48

約数和(自身を含む): 23133600

約数和(自身を除く): 15331620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 7649, 15298, 22947, 30596, 38245, 45894, 76490, 91788, 114735, 130033, 152980, 229470, 260066, 390099, 458940, 520132, 650165, 780198, 1300330, 1560396, 1950495, 2600660, 3900990, 7801980]

約数ペア:

[(1, 7801980), (2, 3900990), (3, 2600660), (4, 1950495), (5, 1560396), (6, 1300330), (10, 780198), (12, 650165), (15, 520132), (17, 458940), (20, 390099), (30, 260066), (34, 229470), (51, 152980), (60, 130033), (68, 114735), (85, 91788), (102, 76490), (170, 45894), (204, 38245), (255, 30596), (340, 22947), (510, 15298), (1020, 7649)]