18320895

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 33415200

約数和(自身を除く): 15094305

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 101, 139, 145, 261, 303, 417, 435, 505, 695, 909, 1251, 1305, 1515, 2085, 2929, 4031, 4545, 6255, 8787, 12093, 14039, 14645, 20155, 26361, 36279, 42117, 43935, 60465, 70195, 126351, 131805, 181395, 210585, 407131, 631755, 1221393, 2035655, 3664179, 6106965, 18320895]

約数ペア:

[(1, 18320895), (3, 6106965), (5, 3664179), (9, 2035655), (15, 1221393), (29, 631755), (45, 407131), (87, 210585), (101, 181395), (139, 131805), (145, 126351), (261, 70195), (303, 60465), (417, 43935), (435, 42117), (505, 36279), (695, 26361), (909, 20155), (1251, 14645), (1305, 14039), (1515, 12093), (2085, 8787), (2929, 6255), (4031, 4545)]