20278365

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{283}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 34598016

約数和(自身を除く): 14319651

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 281, 283, 843, 849, 1405, 1415, 4215, 4245, 4777, 4811, 14331, 14433, 23885, 24055, 71655, 72165, 79523, 238569, 397615, 1192845, 1351891, 4055673, 6759455, 20278365]

約数ペア:

[(1, 20278365), (3, 6759455), (5, 4055673), (15, 1351891), (17, 1192845), (51, 397615), (85, 238569), (255, 79523), (281, 72165), (283, 71655), (843, 24055), (849, 23885), (1405, 14433), (1415, 14331), (4215, 4811), (4245, 4777)]