21462705

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 20873295

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 97, 99, 135, 149, 165, 291, 297, 447, 485, 495, 745, 873, 1067, 1341, 1455, 1485, 1639, 2235, 2619, 3201, 4023, 4365, 4917, 5335, 6705, 8195, 9603, 13095, 14453, 14751, 16005, 20115, 24585, 28809, 43359, 44253, 48015, 72265, 73755, 130077, 144045, 158983, 216795, 221265, 390231, 476949, 650385, 794915, 1430847, 1951155, 2384745, 4292541, 7154235, 21462705]

約数ペア:

[(1, 21462705), (3, 7154235), (5, 4292541), (9, 2384745), (11, 1951155), (15, 1430847), (27, 794915), (33, 650385), (45, 476949), (55, 390231), (97, 221265), (99, 216795), (135, 158983), (149, 144045), (165, 130077), (291, 73755), (297, 72265), (447, 48015), (485, 44253), (495, 43359), (745, 28809), (873, 24585), (1067, 20115), (1341, 16005), (1455, 14751), (1485, 14453), (1639, 13095), (2235, 9603), (2619, 8195), (3201, 6705), (4023, 5335), (4365, 4917)]