21878792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2963}}^1$

素因数の和:3053

約数の個数: 32

約数和(自身を含む): 44815680

約数和(自身を除く): 22936888

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2963, 3692, 5926, 7384, 11852, 23704, 38519, 77038, 154076, 210373, 308152, 420746, 841492, 1682984, 2734849, 5469698, 10939396, 21878792]

約数ペア:

[(1, 21878792), (2, 10939396), (4, 5469698), (8, 2734849), (13, 1682984), (26, 841492), (52, 420746), (71, 308152), (104, 210373), (142, 154076), (284, 77038), (568, 38519), (923, 23704), (1846, 11852), (2963, 7384), (3692, 5926)]