21910420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8237}}^1$

素因数の和:8272

約数の個数: 48

約数和(自身を含む): 55359360

約数和(自身を除く): 33448940

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8237, 16474, 32948, 41185, 57659, 82370, 115318, 156503, 164740, 230636, 288295, 313006, 576590, 626012, 782515, 1095521, 1153180, 1565030, 2191042, 3130060, 4382084, 5477605, 10955210, 21910420]

約数ペア:

[(1, 21910420), (2, 10955210), (4, 5477605), (5, 4382084), (7, 3130060), (10, 2191042), (14, 1565030), (19, 1153180), (20, 1095521), (28, 782515), (35, 626012), (38, 576590), (70, 313006), (76, 288295), (95, 230636), (133, 164740), (140, 156503), (190, 115318), (266, 82370), (380, 57659), (532, 41185), (665, 32948), (1330, 16474), (2660, 8237)]