21199737

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{4987}}^1$

素因数の和:5112

約数の個数: 16

約数和(自身を含む): 30726080

約数和(自身を除く): 9526343

約数列:

[1, 3, 13, 39, 109, 327, 1417, 4251, 4987, 14961, 64831, 194493, 543583, 1630749, 7066579, 21199737]

約数ペア:

[(1, 21199737), (3, 7066579), (13, 1630749), (39, 543583), (109, 194493), (327, 64831), (1417, 14961), (4251, 4987)]