19987335

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 36996960

約数和(自身を除く): 17009625

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 97, 171, 241, 285, 291, 485, 723, 855, 873, 1205, 1455, 1843, 2169, 3615, 4365, 4579, 5529, 9215, 10845, 13737, 16587, 22895, 23377, 27645, 41211, 68685, 70131, 82935, 116885, 206055, 210393, 350655, 444163, 1051965, 1332489, 2220815, 3997467, 6662445, 19987335]

約数ペア:

[(1, 19987335), (3, 6662445), (5, 3997467), (9, 2220815), (15, 1332489), (19, 1051965), (45, 444163), (57, 350655), (95, 210393), (97, 206055), (171, 116885), (241, 82935), (285, 70131), (291, 68685), (485, 41211), (723, 27645), (855, 23377), (873, 22895), (1205, 16587), (1455, 13737), (1843, 10845), (2169, 9215), (3615, 5529), (4365, 4579)]