20906908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 42368256

約数和(自身を除く): 21461348

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 73, 92, 146, 253, 283, 292, 506, 566, 803, 1012, 1132, 1606, 1679, 3113, 3212, 3358, 6226, 6509, 6716, 12452, 13018, 18469, 20659, 26036, 36938, 41318, 71599, 73876, 82636, 143198, 227249, 286396, 454498, 475157, 908996, 950314, 1900628, 5226727, 10453454, 20906908]

約数ペア:

[(1, 20906908), (2, 10453454), (4, 5226727), (11, 1900628), (22, 950314), (23, 908996), (44, 475157), (46, 454498), (73, 286396), (92, 227249), (146, 143198), (253, 82636), (283, 73876), (292, 71599), (506, 41318), (566, 36938), (803, 26036), (1012, 20659), (1132, 18469), (1606, 13018), (1679, 12452), (3113, 6716), (3212, 6509), (3358, 6226)]