18689540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 23041660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 359, 380, 548, 685, 718, 1370, 1436, 1795, 2603, 2740, 3590, 5206, 6821, 7180, 10412, 13015, 13642, 26030, 27284, 34105, 49183, 52060, 68210, 98366, 136420, 196732, 245915, 491830, 934477, 983660, 1868954, 3737908, 4672385, 9344770, 18689540]

約数ペア:

[(1, 18689540), (2, 9344770), (4, 4672385), (5, 3737908), (10, 1868954), (19, 983660), (20, 934477), (38, 491830), (76, 245915), (95, 196732), (137, 136420), (190, 98366), (274, 68210), (359, 52060), (380, 49183), (548, 34105), (685, 27284), (718, 26030), (1370, 13642), (1436, 13015), (1795, 10412), (2603, 7180), (2740, 6821), (3590, 5206)]