21811020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4721}}^1$

素因数の和:4751

約数の個数: 96

約数和(自身を含む): 76156416

約数和(自身を除く): 54345396

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 132, 140, 154, 165, 210, 220, 231, 308, 330, 385, 420, 462, 660, 770, 924, 1155, 1540, 2310, 4620, 4721, 9442, 14163, 18884, 23605, 28326, 33047, 47210, 51931, 56652, 66094, 70815, 94420, 99141, 103862, 132188, 141630, 155793, 165235, 198282, 207724, 259655, 283260, 311586, 330470, 363517, 396564, 495705, 519310, 623172, 660940, 727034, 778965, 991410, 1038620, 1090551, 1454068, 1557930, 1817585, 1982820, 2181102, 3115860, 3635170, 4362204, 5452755, 7270340, 10905510, 21811020]

約数ペア:

[(1, 21811020), (2, 10905510), (3, 7270340), (4, 5452755), (5, 4362204), (6, 3635170), (7, 3115860), (10, 2181102), (11, 1982820), (12, 1817585), (14, 1557930), (15, 1454068), (20, 1090551), (21, 1038620), (22, 991410), (28, 778965), (30, 727034), (33, 660940), (35, 623172), (42, 519310), (44, 495705), (55, 396564), (60, 363517), (66, 330470), (70, 311586), (77, 283260), (84, 259655), (105, 207724), (110, 198282), (132, 165235), (140, 155793), (154, 141630), (165, 132188), (210, 103862), (220, 99141), (231, 94420), (308, 70815), (330, 66094), (385, 56652), (420, 51931), (462, 47210), (660, 33047), (770, 28326), (924, 23605), (1155, 18884), (1540, 14163), (2310, 9442), (4620, 4721)]