21797925

素因数分解:

$3^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{571}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 36173280

約数和(自身を除く): 14375355

約数列:

[1, 3, 5, 15, 25, 75, 509, 571, 1527, 1713, 2545, 2855, 7635, 8565, 12725, 14275, 38175, 42825, 290639, 871917, 1453195, 4359585, 7265975, 21797925]

約数ペア:

[(1, 21797925), (3, 7265975), (5, 4359585), (15, 1453195), (25, 871917), (75, 290639), (509, 42825), (571, 38175), (1527, 14275), (1713, 12725), (2545, 8565), (2855, 7635)]