31620820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20533}}^1$

素因数の和:20560

約数の個数: 48

約数和(自身を含む): 82793088

約数和(自身を除く): 51172268

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 20533, 41066, 82132, 102665, 143731, 205330, 225863, 287462, 410660, 451726, 574924, 718655, 903452, 1129315, 1437310, 1581041, 2258630, 2874620, 3162082, 4517260, 6324164, 7905205, 15810410, 31620820]

約数ペア:

[(1, 31620820), (2, 15810410), (4, 7905205), (5, 6324164), (7, 4517260), (10, 3162082), (11, 2874620), (14, 2258630), (20, 1581041), (22, 1437310), (28, 1129315), (35, 903452), (44, 718655), (55, 574924), (70, 451726), (77, 410660), (110, 287462), (140, 225863), (154, 205330), (220, 143731), (308, 102665), (385, 82132), (770, 41066), (1540, 20533)]