28261905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 55738368

約数和(自身を除く): 27476463

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 71, 85, 105, 119, 213, 223, 255, 355, 357, 497, 595, 669, 1065, 1115, 1207, 1491, 1561, 1785, 2485, 3345, 3621, 3791, 4683, 6035, 7455, 7805, 8449, 11373, 15833, 18105, 18955, 23415, 25347, 26537, 42245, 47499, 56865, 79165, 79611, 110831, 126735, 132685, 237495, 269161, 332493, 398055, 554155, 807483, 1345805, 1662465, 1884127, 4037415, 5652381, 9420635, 28261905]

約数ペア:

[(1, 28261905), (3, 9420635), (5, 5652381), (7, 4037415), (15, 1884127), (17, 1662465), (21, 1345805), (35, 807483), (51, 554155), (71, 398055), (85, 332493), (105, 269161), (119, 237495), (213, 132685), (223, 126735), (255, 110831), (355, 79611), (357, 79165), (497, 56865), (595, 47499), (669, 42245), (1065, 26537), (1115, 25347), (1207, 23415), (1491, 18955), (1561, 18105), (1785, 15833), (2485, 11373), (3345, 8449), (3621, 7805), (3791, 7455), (4683, 6035)]