21954645

素因数分解:

$3^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{359}}^1$

素因数の和:527

約数の個数: 40

約数和(自身を含む): 39726720

約数和(自身を除く): 17772075

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 151, 359, 405, 453, 755, 1077, 1359, 1795, 2265, 3231, 4077, 5385, 6795, 9693, 12231, 16155, 20385, 29079, 48465, 54209, 61155, 145395, 162627, 271045, 487881, 813135, 1463643, 2439405, 4390929, 7318215, 21954645]

約数ペア:

[(1, 21954645), (3, 7318215), (5, 4390929), (9, 2439405), (15, 1463643), (27, 813135), (45, 487881), (81, 271045), (135, 162627), (151, 145395), (359, 61155), (405, 54209), (453, 48465), (755, 29079), (1077, 20385), (1359, 16155), (1795, 12231), (2265, 9693), (3231, 6795), (4077, 5385)]