18987904

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{11411}}^1$

素因数の和:11438

約数の個数: 32

約数和(自身を含む): 40740840

約数和(自身を除く): 21752936

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 11411, 22822, 45644, 91288, 148343, 182576, 296686, 365152, 593372, 730304, 1186744, 1460608, 2373488, 4746976, 9493952, 18987904]

約数ペア:

[(1, 18987904), (2, 9493952), (4, 4746976), (8, 2373488), (13, 1460608), (16, 1186744), (26, 730304), (32, 593372), (52, 365152), (64, 296686), (104, 182576), (128, 148343), (208, 91288), (416, 45644), (832, 22822), (1664, 11411)]