21358876

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2237}}^1$

素因数の和:2290

約数の個数: 48

約数和(自身を含む): 48125952

約数和(自身を除く): 26767076

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2237, 2387, 4474, 4774, 8948, 9548, 15659, 24607, 31318, 49214, 62636, 69347, 98428, 138694, 172249, 277388, 344498, 485429, 688996, 762817, 970858, 1525634, 1941716, 3051268, 5339719, 10679438, 21358876]

約数ペア:

[(1, 21358876), (2, 10679438), (4, 5339719), (7, 3051268), (11, 1941716), (14, 1525634), (22, 970858), (28, 762817), (31, 688996), (44, 485429), (62, 344498), (77, 277388), (124, 172249), (154, 138694), (217, 98428), (308, 69347), (341, 62636), (434, 49214), (682, 31318), (868, 24607), (1364, 15659), (2237, 9548), (2387, 8948), (4474, 4774)]