406978325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{2063}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 544631808

約数和(自身を除く): 137653483

約数列:

[1, 5, 13, 25, 65, 325, 607, 2063, 3035, 7891, 10315, 15175, 26819, 39455, 51575, 134095, 197275, 670475, 1252241, 6261205, 16279133, 31306025, 81395665, 406978325]

約数ペア:

[(1, 406978325), (5, 81395665), (13, 31306025), (25, 16279133), (65, 6261205), (325, 1252241), (607, 670475), (2063, 197275), (3035, 134095), (7891, 51575), (10315, 39455), (15175, 26819)]