21750795

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 42900480

約数和(自身を除く): 21149685

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 97, 99, 135, 151, 165, 291, 297, 453, 485, 495, 755, 873, 1067, 1359, 1455, 1485, 1661, 2265, 2619, 3201, 4077, 4365, 4983, 5335, 6795, 8305, 9603, 13095, 14647, 14949, 16005, 20385, 24915, 28809, 43941, 44847, 48015, 73235, 74745, 131823, 144045, 161117, 219705, 224235, 395469, 483351, 659115, 805585, 1450053, 1977345, 2416755, 4350159, 7250265, 21750795]

約数ペア:

[(1, 21750795), (3, 7250265), (5, 4350159), (9, 2416755), (11, 1977345), (15, 1450053), (27, 805585), (33, 659115), (45, 483351), (55, 395469), (97, 224235), (99, 219705), (135, 161117), (151, 144045), (165, 131823), (291, 74745), (297, 73235), (453, 48015), (485, 44847), (495, 43941), (755, 28809), (873, 24915), (1067, 20385), (1359, 16005), (1455, 14949), (1485, 14647), (1661, 13095), (2265, 9603), (2619, 8305), (3201, 6795), (4077, 5335), (4365, 4983)]