21679020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10949}}^1$

素因数の和:10975

約数の個数: 72

約数和(自身を含む): 71744400

約数和(自身を除く): 50065380

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, 10949, 21898, 32847, 43796, 54745, 65694, 98541, 109490, 120439, 131388, 164235, 197082, 218980, 240878, 328470, 361317, 394164, 481756, 492705, 602195, 656940, 722634, 985410, 1083951, 1204390, 1445268, 1806585, 1970820, 2167902, 2408780, 3613170, 4335804, 5419755, 7226340, 10839510, 21679020]

約数ペア:

[(1, 21679020), (2, 10839510), (3, 7226340), (4, 5419755), (5, 4335804), (6, 3613170), (9, 2408780), (10, 2167902), (11, 1970820), (12, 1806585), (15, 1445268), (18, 1204390), (20, 1083951), (22, 985410), (30, 722634), (33, 656940), (36, 602195), (44, 492705), (45, 481756), (55, 394164), (60, 361317), (66, 328470), (90, 240878), (99, 218980), (110, 197082), (132, 164235), (165, 131388), (180, 120439), (198, 109490), (220, 98541), (330, 65694), (396, 54745), (495, 43796), (660, 32847), (990, 21898), (1980, 10949)]