20104965

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 37857456

約数和(自身を除く): 17752491

約数列:

[1, 3, 5, 9, 15, 17, 41, 45, 51, 85, 123, 153, 205, 255, 369, 615, 641, 697, 765, 1845, 1923, 2091, 3205, 3485, 5769, 6273, 9615, 10455, 10897, 26281, 28845, 31365, 32691, 54485, 78843, 98073, 131405, 163455, 236529, 394215, 446777, 490365, 1182645, 1340331, 2233885, 4020993, 6701655, 20104965]

約数ペア:

[(1, 20104965), (3, 6701655), (5, 4020993), (9, 2233885), (15, 1340331), (17, 1182645), (41, 490365), (45, 446777), (51, 394215), (85, 236529), (123, 163455), (153, 131405), (205, 98073), (255, 78843), (369, 54485), (615, 32691), (641, 31365), (697, 28845), (765, 26281), (1845, 10897), (1923, 10455), (2091, 9615), (3205, 6273), (3485, 5769)]