21220320

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4019}}^1$

素因数の和:4048

約数の個数: 96

約数和(自身を含む): 72938880

約数和(自身を除く): 51718560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 220, 240, 264, 330, 352, 440, 480, 528, 660, 880, 1056, 1320, 1760, 2640, 4019, 5280, 8038, 12057, 16076, 20095, 24114, 32152, 40190, 44209, 48228, 60285, 64304, 80380, 88418, 96456, 120570, 128608, 132627, 160760, 176836, 192912, 221045, 241140, 265254, 321520, 353672, 385824, 442090, 482280, 530508, 643040, 663135, 707344, 884180, 964560, 1061016, 1326270, 1414688, 1768360, 1929120, 2122032, 2652540, 3536720, 4244064, 5305080, 7073440, 10610160, 21220320]

約数ペア:

[(1, 21220320), (2, 10610160), (3, 7073440), (4, 5305080), (5, 4244064), (6, 3536720), (8, 2652540), (10, 2122032), (11, 1929120), (12, 1768360), (15, 1414688), (16, 1326270), (20, 1061016), (22, 964560), (24, 884180), (30, 707344), (32, 663135), (33, 643040), (40, 530508), (44, 482280), (48, 442090), (55, 385824), (60, 353672), (66, 321520), (80, 265254), (88, 241140), (96, 221045), (110, 192912), (120, 176836), (132, 160760), (160, 132627), (165, 128608), (176, 120570), (220, 96456), (240, 88418), (264, 80380), (330, 64304), (352, 60285), (440, 48228), (480, 44209), (528, 40190), (660, 32152), (880, 24114), (1056, 20095), (1320, 16076), (1760, 12057), (2640, 8038), (4019, 5280)]