21049380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10631}}^1$

素因数の和:10657

約数の個数: 72

約数和(自身を含む): 69660864

約数和(自身を除く): 48611484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10631, 21262, 31893, 42524, 53155, 63786, 95679, 106310, 116941, 127572, 159465, 191358, 212620, 233882, 318930, 350823, 382716, 467764, 478395, 584705, 637860, 701646, 956790, 1052469, 1169410, 1403292, 1754115, 1913580, 2104938, 2338820, 3508230, 4209876, 5262345, 7016460, 10524690, 21049380]

約数ペア:

[(1, 21049380), (2, 10524690), (3, 7016460), (4, 5262345), (5, 4209876), (6, 3508230), (9, 2338820), (10, 2104938), (11, 1913580), (12, 1754115), (15, 1403292), (18, 1169410), (20, 1052469), (22, 956790), (30, 701646), (33, 637860), (36, 584705), (44, 478395), (45, 467764), (55, 382716), (60, 350823), (66, 318930), (90, 233882), (99, 212620), (110, 191358), (132, 159465), (165, 127572), (180, 116941), (198, 106310), (220, 95679), (330, 63786), (396, 53155), (495, 42524), (660, 31893), (990, 21262), (1980, 10631)]