205223875

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 266692608

約数和(自身を除く): 61468733

約数列:

[1, 5, 25, 31, 125, 155, 211, 251, 775, 1055, 1255, 3875, 5275, 6275, 6541, 7781, 26375, 31375, 32705, 38905, 52961, 163525, 194525, 264805, 817625, 972625, 1324025, 1641791, 6620125, 8208955, 41044775, 205223875]

約数ペア:

[(1, 205223875), (5, 41044775), (25, 8208955), (31, 6620125), (125, 1641791), (155, 1324025), (211, 972625), (251, 817625), (775, 264805), (1055, 194525), (1255, 163525), (3875, 52961), (5275, 38905), (6275, 32705), (6541, 31375), (7781, 26375)]