20609865

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{929}}^1$

素因数の和:986

約数の個数: 48

約数和(自身を含む): 39171600

約数和(自身を除く): 18561735

約数列:

[1, 3, 5, 9, 15, 17, 29, 45, 51, 85, 87, 145, 153, 255, 261, 435, 493, 765, 929, 1305, 1479, 2465, 2787, 4437, 4645, 7395, 8361, 13935, 15793, 22185, 26941, 41805, 47379, 78965, 80823, 134705, 142137, 236895, 242469, 404115, 457997, 710685, 1212345, 1373991, 2289985, 4121973, 6869955, 20609865]

約数ペア:

[(1, 20609865), (3, 6869955), (5, 4121973), (9, 2289985), (15, 1373991), (17, 1212345), (29, 710685), (45, 457997), (51, 404115), (85, 242469), (87, 236895), (145, 142137), (153, 134705), (255, 80823), (261, 78965), (435, 47379), (493, 41805), (765, 26941), (929, 22185), (1305, 15793), (1479, 13935), (2465, 8361), (2787, 7395), (4437, 4645)]