18984944

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{401}}^1$

素因数の和:689

約数の個数: 40

約数和(自身を含む): 40376880

約数和(自身を除く): 21391936

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 269, 401, 538, 802, 1076, 1604, 2152, 2959, 3208, 4304, 4411, 5918, 6416, 8822, 11836, 17644, 23672, 35288, 47344, 70576, 107869, 215738, 431476, 862952, 1186559, 1725904, 2373118, 4746236, 9492472, 18984944]

約数ペア:

[(1, 18984944), (2, 9492472), (4, 4746236), (8, 2373118), (11, 1725904), (16, 1186559), (22, 862952), (44, 431476), (88, 215738), (176, 107869), (269, 70576), (401, 47344), (538, 35288), (802, 23672), (1076, 17644), (1604, 11836), (2152, 8822), (2959, 6416), (3208, 5918), (4304, 4411)]