21512880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29879}}^1$

素因数の和:29898

約数の個数: 60

約数和(自身を含む): 72249840

約数和(自身を除く): 50736960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29879, 59758, 89637, 119516, 149395, 179274, 239032, 268911, 298790, 358548, 448185, 478064, 537822, 597580, 717096, 896370, 1075644, 1195160, 1344555, 1434192, 1792740, 2151288, 2390320, 2689110, 3585480, 4302576, 5378220, 7170960, 10756440, 21512880]

約数ペア:

[(1, 21512880), (2, 10756440), (3, 7170960), (4, 5378220), (5, 4302576), (6, 3585480), (8, 2689110), (9, 2390320), (10, 2151288), (12, 1792740), (15, 1434192), (16, 1344555), (18, 1195160), (20, 1075644), (24, 896370), (30, 717096), (36, 597580), (40, 537822), (45, 478064), (48, 448185), (60, 358548), (72, 298790), (80, 268911), (90, 239032), (120, 179274), (144, 149395), (180, 119516), (240, 89637), (360, 59758), (720, 29879)]