21374715

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2027}}^1$

素因数の和:2091

約数の個数: 32

約数和(自身を含む): 36990720

約数和(自身を除く): 15616005

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 2027, 2109, 3515, 6081, 10135, 10545, 30405, 38513, 74999, 115539, 192565, 224997, 374995, 577695, 1124985, 1424981, 4274943, 7124905, 21374715]

約数ペア:

[(1, 21374715), (3, 7124905), (5, 4274943), (15, 1424981), (19, 1124985), (37, 577695), (57, 374995), (95, 224997), (111, 192565), (185, 115539), (285, 74999), (555, 38513), (703, 30405), (2027, 10545), (2109, 10135), (3515, 6081)]