15721292321

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1\times {\mathrm{1489}}^1$

素因数の和:1889

約数の個数: 32

約数和(自身を含む): 18537984000

約数和(自身を除く): 2816691679

約数列:

[1, 7, 53, 149, 191, 371, 1043, 1337, 1489, 7897, 10123, 10423, 28459, 55279, 70861, 78917, 199213, 221861, 284399, 552419, 1508327, 1553027, 1990793, 10558289, 11758633, 15073147, 42375451, 82310431, 105512029, 296628157, 2245898903, 15721292321]

約数ペア:

[(1, 15721292321), (7, 2245898903), (53, 296628157), (149, 105512029), (191, 82310431), (371, 42375451), (1043, 15073147), (1337, 11758633), (1489, 10558289), (7897, 1990793), (10123, 1553027), (10423, 1508327), (28459, 552419), (55279, 284399), (70861, 221861), (78917, 199213)]