78001980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{811}}^1$

素因数の和:1059

約数の個数: 96

約数和(自身を含む): 251005440

約数和(自身を除く): 173003460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 229, 420, 458, 687, 811, 916, 1145, 1374, 1603, 1622, 2290, 2433, 2748, 3206, 3244, 3435, 4055, 4580, 4809, 4866, 5677, 6412, 6870, 8015, 8110, 9618, 9732, 11354, 12165, 13740, 16030, 16220, 17031, 19236, 22708, 24045, 24330, 28385, 32060, 34062, 48090, 48660, 56770, 68124, 85155, 96180, 113540, 170310, 185719, 340620, 371438, 557157, 742876, 928595, 1114314, 1300033, 1857190, 2228628, 2600066, 2785785, 3714380, 3900099, 5200132, 5571570, 6500165, 7800198, 11143140, 13000330, 15600396, 19500495, 26000660, 39000990, 78001980]

約数ペア:

[(1, 78001980), (2, 39000990), (3, 26000660), (4, 19500495), (5, 15600396), (6, 13000330), (7, 11143140), (10, 7800198), (12, 6500165), (14, 5571570), (15, 5200132), (20, 3900099), (21, 3714380), (28, 2785785), (30, 2600066), (35, 2228628), (42, 1857190), (60, 1300033), (70, 1114314), (84, 928595), (105, 742876), (140, 557157), (210, 371438), (229, 340620), (420, 185719), (458, 170310), (687, 113540), (811, 96180), (916, 85155), (1145, 68124), (1374, 56770), (1603, 48660), (1622, 48090), (2290, 34062), (2433, 32060), (2748, 28385), (3206, 24330), (3244, 24045), (3435, 22708), (4055, 19236), (4580, 17031), (4809, 16220), (4866, 16030), (5677, 13740), (6412, 12165), (6870, 11354), (8015, 9732), (8110, 9618)]