28290015

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1307}}^1$

素因数の和:1368

約数の個数: 48

約数和(自身を含む): 54276768

約数和(自身を除く): 25986753

約数列:

[1, 3, 5, 9, 13, 15, 37, 39, 45, 65, 111, 117, 185, 195, 333, 481, 555, 585, 1307, 1443, 1665, 2405, 3921, 4329, 6535, 7215, 11763, 16991, 19605, 21645, 48359, 50973, 58815, 84955, 145077, 152919, 241795, 254865, 435231, 628667, 725385, 764595, 1886001, 2176155, 3143335, 5658003, 9430005, 28290015]

約数ペア:

[(1, 28290015), (3, 9430005), (5, 5658003), (9, 3143335), (13, 2176155), (15, 1886001), (37, 764595), (39, 725385), (45, 628667), (65, 435231), (111, 254865), (117, 241795), (185, 152919), (195, 145077), (333, 84955), (481, 58815), (555, 50973), (585, 48359), (1307, 21645), (1443, 19605), (1665, 16991), (2405, 11763), (3921, 7215), (4329, 6535)]