21938445

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2851}}^1$

素因数の和:2887

約数の個数: 40

約数和(自身を含む): 41411040

約数和(自身を除く): 19472595

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2851, 7695, 8553, 14255, 25659, 42765, 54169, 76977, 128295, 162507, 230931, 270845, 384885, 487521, 812535, 1154655, 1462563, 2437605, 4387689, 7312815, 21938445]

約数ペア:

[(1, 21938445), (3, 7312815), (5, 4387689), (9, 2437605), (15, 1462563), (19, 1154655), (27, 812535), (45, 487521), (57, 384885), (81, 270845), (95, 230931), (135, 162507), (171, 128295), (285, 76977), (405, 54169), (513, 42765), (855, 25659), (1539, 14255), (2565, 8553), (2851, 7695)]