21631844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 21042844

約数列:

[1, 2, 4, 13, 26, 47, 52, 53, 94, 106, 167, 188, 212, 334, 611, 668, 689, 1222, 1378, 2171, 2444, 2491, 2756, 4342, 4982, 7849, 8684, 8851, 9964, 15698, 17702, 31396, 32383, 35404, 64766, 102037, 115063, 129532, 204074, 230126, 408148, 415997, 460252, 831994, 1663988, 5407961, 10815922, 21631844]

約数ペア:

[(1, 21631844), (2, 10815922), (4, 5407961), (13, 1663988), (26, 831994), (47, 460252), (52, 415997), (53, 408148), (94, 230126), (106, 204074), (167, 129532), (188, 115063), (212, 102037), (334, 64766), (611, 35404), (668, 32383), (689, 31396), (1222, 17702), (1378, 15698), (2171, 9964), (2444, 8851), (2491, 8684), (2756, 7849), (4342, 4982)]