20956810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2251}}^1$

素因数の和:2291

約数の個数: 48

約数和(自身を含む): 46211040

約数和(自身を除く): 25254230

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2251, 4502, 4655, 9310, 11255, 15757, 22510, 31514, 42769, 78785, 85538, 110299, 157570, 213845, 220598, 299383, 427690, 551495, 598766, 1102990, 1496915, 2095681, 2993830, 4191362, 10478405, 20956810]

約数ペア:

[(1, 20956810), (2, 10478405), (5, 4191362), (7, 2993830), (10, 2095681), (14, 1496915), (19, 1102990), (35, 598766), (38, 551495), (49, 427690), (70, 299383), (95, 220598), (98, 213845), (133, 157570), (190, 110299), (245, 85538), (266, 78785), (490, 42769), (665, 31514), (931, 22510), (1330, 15757), (1862, 11255), (2251, 9310), (4502, 4655)]