221401980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{8849}}^1$

素因数の和:9003

約数の個数: 72

約数和(自身を含む): 676494000

約数和(自身を除く): 455092020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 1251, 1390, 1668, 2085, 2502, 2780, 4170, 5004, 6255, 8340, 8849, 12510, 17698, 25020, 26547, 35396, 44245, 53094, 79641, 88490, 106188, 132735, 159282, 176980, 265470, 318564, 398205, 530940, 796410, 1230011, 1592820, 2460022, 3690033, 4920044, 6150055, 7380066, 11070099, 12300110, 14760132, 18450165, 22140198, 24600220, 36900330, 44280396, 55350495, 73800660, 110700990, 221401980]

約数ペア:

[(1, 221401980), (2, 110700990), (3, 73800660), (4, 55350495), (5, 44280396), (6, 36900330), (9, 24600220), (10, 22140198), (12, 18450165), (15, 14760132), (18, 12300110), (20, 11070099), (30, 7380066), (36, 6150055), (45, 4920044), (60, 3690033), (90, 2460022), (139, 1592820), (180, 1230011), (278, 796410), (417, 530940), (556, 398205), (695, 318564), (834, 265470), (1251, 176980), (1390, 159282), (1668, 132735), (2085, 106188), (2502, 88490), (2780, 79641), (4170, 53094), (5004, 44245), (6255, 35396), (8340, 26547), (8849, 25020), (12510, 17698)]