21826460

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 25801540

約数列:

[1, 2, 4, 5, 10, 20, 53, 59, 106, 118, 212, 236, 265, 295, 349, 530, 590, 698, 1060, 1180, 1396, 1745, 3127, 3490, 6254, 6980, 12508, 15635, 18497, 20591, 31270, 36994, 41182, 62540, 73988, 82364, 92485, 102955, 184970, 205910, 369940, 411820, 1091323, 2182646, 4365292, 5456615, 10913230, 21826460]

約数ペア:

[(1, 21826460), (2, 10913230), (4, 5456615), (5, 4365292), (10, 2182646), (20, 1091323), (53, 411820), (59, 369940), (106, 205910), (118, 184970), (212, 102955), (236, 92485), (265, 82364), (295, 73988), (349, 62540), (530, 41182), (590, 36994), (698, 31270), (1060, 20591), (1180, 18497), (1396, 15635), (1745, 12508), (3127, 6980), (3490, 6254)]