209804980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{136237}}^1$

素因数の和:136264

約数の個数: 48

約数和(自身を含む): 549311616

約数和(自身を除く): 339506636

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, 136237, 272474, 544948, 681185, 953659, 1362370, 1498607, 1907318, 2724740, 2997214, 3814636, 4768295, 5994428, 7493035, 9536590, 10490249, 14986070, 19073180, 20980498, 29972140, 41960996, 52451245, 104902490, 209804980]

約数ペア:

[(1, 209804980), (2, 104902490), (4, 52451245), (5, 41960996), (7, 29972140), (10, 20980498), (11, 19073180), (14, 14986070), (20, 10490249), (22, 9536590), (28, 7493035), (35, 5994428), (44, 4768295), (55, 3814636), (70, 2997214), (77, 2724740), (110, 1907318), (140, 1498607), (154, 1362370), (220, 953659), (308, 681185), (385, 544948), (770, 272474), (1540, 136237)]