19085985

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 35689680

約数和(自身を除く): 16603695

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 61, 85, 153, 183, 255, 305, 409, 549, 765, 915, 1037, 1227, 2045, 2745, 3111, 3681, 5185, 6135, 6953, 9333, 15555, 18405, 20859, 24949, 34765, 46665, 62577, 74847, 104295, 124745, 224541, 312885, 374235, 424133, 1122705, 1272399, 2120665, 3817197, 6361995, 19085985]

約数ペア:

[(1, 19085985), (3, 6361995), (5, 3817197), (9, 2120665), (15, 1272399), (17, 1122705), (45, 424133), (51, 374235), (61, 312885), (85, 224541), (153, 124745), (183, 104295), (255, 74847), (305, 62577), (409, 46665), (549, 34765), (765, 24949), (915, 20859), (1037, 18405), (1227, 15555), (2045, 9333), (2745, 6953), (3111, 6135), (3681, 5185)]