21141780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 65415168

約数和(自身を除く): 44273388

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 103, 110, 132, 165, 206, 220, 309, 311, 330, 412, 515, 618, 622, 660, 933, 1030, 1133, 1236, 1244, 1545, 1555, 1866, 2060, 2266, 3090, 3110, 3399, 3421, 3732, 4532, 4665, 5665, 6180, 6220, 6798, 6842, 9330, 10263, 11330, 13596, 13684, 16995, 17105, 18660, 20526, 22660, 32033, 33990, 34210, 41052, 51315, 64066, 67980, 68420, 96099, 102630, 128132, 160165, 192198, 205260, 320330, 352363, 384396, 480495, 640660, 704726, 960990, 1057089, 1409452, 1761815, 1921980, 2114178, 3523630, 4228356, 5285445, 7047260, 10570890, 21141780]

約数ペア:

[(1, 21141780), (2, 10570890), (3, 7047260), (4, 5285445), (5, 4228356), (6, 3523630), (10, 2114178), (11, 1921980), (12, 1761815), (15, 1409452), (20, 1057089), (22, 960990), (30, 704726), (33, 640660), (44, 480495), (55, 384396), (60, 352363), (66, 320330), (103, 205260), (110, 192198), (132, 160165), (165, 128132), (206, 102630), (220, 96099), (309, 68420), (311, 67980), (330, 64066), (412, 51315), (515, 41052), (618, 34210), (622, 33990), (660, 32033), (933, 22660), (1030, 20526), (1133, 18660), (1236, 17105), (1244, 16995), (1545, 13684), (1555, 13596), (1866, 11330), (2060, 10263), (2266, 9330), (3090, 6842), (3110, 6798), (3399, 6220), (3421, 6180), (3732, 5665), (4532, 4665)]