21420901

素因数分解:

${\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:552

約数の個数: 16

約数和(自身を含む): 23608368

約数和(自身を除く): 2187467

約数列:

[1, 17, 41, 73, 421, 697, 1241, 2993, 7157, 17261, 30733, 50881, 293437, 522461, 1260053, 21420901]

約数ペア:

[(1, 21420901), (17, 1260053), (41, 522461), (73, 293437), (421, 50881), (697, 30733), (1241, 17261), (2993, 7157)]