21738420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10979}}^1$

素因数の和:11005

約数の個数: 72

約数和(自身を含む): 71940960

約数和(自身を除く): 50202540

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, 10979, 21958, 32937, 43916, 54895, 65874, 98811, 109790, 120769, 131748, 164685, 197622, 219580, 241538, 329370, 362307, 395244, 483076, 494055, 603845, 658740, 724614, 988110, 1086921, 1207690, 1449228, 1811535, 1976220, 2173842, 2415380, 3623070, 4347684, 5434605, 7246140, 10869210, 21738420]

約数ペア:

[(1, 21738420), (2, 10869210), (3, 7246140), (4, 5434605), (5, 4347684), (6, 3623070), (9, 2415380), (10, 2173842), (11, 1976220), (12, 1811535), (15, 1449228), (18, 1207690), (20, 1086921), (22, 988110), (30, 724614), (33, 658740), (36, 603845), (44, 494055), (45, 483076), (55, 395244), (60, 362307), (66, 329370), (90, 241538), (99, 219580), (110, 197622), (132, 164685), (165, 131748), (180, 120769), (198, 109790), (220, 98811), (330, 65874), (396, 54895), (495, 43916), (660, 32937), (990, 21958), (1980, 10979)]