21445380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10831}}^1$

素因数の和:10857

約数の個数: 72

約数和(自身を含む): 70971264

約数和(自身を除く): 49525884

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, 10831, 21662, 32493, 43324, 54155, 64986, 97479, 108310, 119141, 129972, 162465, 194958, 216620, 238282, 324930, 357423, 389916, 476564, 487395, 595705, 649860, 714846, 974790, 1072269, 1191410, 1429692, 1787115, 1949580, 2144538, 2382820, 3574230, 4289076, 5361345, 7148460, 10722690, 21445380]

約数ペア:

[(1, 21445380), (2, 10722690), (3, 7148460), (4, 5361345), (5, 4289076), (6, 3574230), (9, 2382820), (10, 2144538), (11, 1949580), (12, 1787115), (15, 1429692), (18, 1191410), (20, 1072269), (22, 974790), (30, 714846), (33, 649860), (36, 595705), (44, 487395), (45, 476564), (55, 389916), (60, 357423), (66, 324930), (90, 238282), (99, 216620), (110, 194958), (132, 162465), (165, 129972), (180, 119141), (198, 108310), (220, 97479), (330, 64986), (396, 54155), (495, 43324), (660, 32493), (990, 21662), (1980, 10831)]