20211308

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{4007}}^1$

素因数の和:4121

約数の個数: 24

約数和(自身を含む): 38492832

約数和(自身を除く): 18281524

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 4007, 5044, 8014, 16028, 52091, 104182, 208364, 388679, 777358, 1554716, 5052827, 10105654, 20211308]

約数ペア:

[(1, 20211308), (2, 10105654), (4, 5052827), (13, 1554716), (26, 777358), (52, 388679), (97, 208364), (194, 104182), (388, 52091), (1261, 16028), (2522, 8014), (4007, 5044)]