21853420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{439}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 48787200

約数和(自身を除く): 26933780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 439, 524, 655, 878, 1310, 1756, 2195, 2489, 2620, 4390, 4978, 8341, 8780, 9956, 12445, 16682, 24890, 33364, 41705, 49780, 57509, 83410, 115018, 166820, 230036, 287545, 575090, 1092671, 1150180, 2185342, 4370684, 5463355, 10926710, 21853420]

約数ペア:

[(1, 21853420), (2, 10926710), (4, 5463355), (5, 4370684), (10, 2185342), (19, 1150180), (20, 1092671), (38, 575090), (76, 287545), (95, 230036), (131, 166820), (190, 115018), (262, 83410), (380, 57509), (439, 49780), (524, 41705), (655, 33364), (878, 24890), (1310, 16682), (1756, 12445), (2195, 9956), (2489, 8780), (2620, 8341), (4390, 4978)]