21130619915

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{15877}}^1$

素因数の和:16139

約数の個数: 32

約数和(自身を含む): 26998189056

約数和(自身を除く): 5867569141

約数列:

[1, 5, 23, 71, 115, 163, 355, 815, 1633, 3749, 8165, 11573, 15877, 18745, 57865, 79385, 266179, 365171, 1127267, 1330895, 1825855, 2587951, 5636335, 12939755, 25927141, 59522873, 129635705, 183744521, 297614365, 918722605, 4226123983, 21130619915]

約数ペア:

[(1, 21130619915), (5, 4226123983), (23, 918722605), (71, 297614365), (115, 183744521), (163, 129635705), (355, 59522873), (815, 25927141), (1633, 12939755), (3749, 5636335), (8165, 2587951), (11573, 1825855), (15877, 1330895), (18745, 1127267), (57865, 365171), (79385, 266179)]