18389840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{32839}}^1$

素因数の和:32859

約数の個数: 40

約数和(自身を含む): 48865920

約数和(自身を除く): 30476080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 32839, 65678, 131356, 164195, 229873, 262712, 328390, 459746, 525424, 656780, 919492, 1149365, 1313560, 1838984, 2298730, 2627120, 3677968, 4597460, 9194920, 18389840]

約数ペア:

[(1, 18389840), (2, 9194920), (4, 4597460), (5, 3677968), (7, 2627120), (8, 2298730), (10, 1838984), (14, 1313560), (16, 1149365), (20, 919492), (28, 656780), (35, 525424), (40, 459746), (56, 328390), (70, 262712), (80, 229873), (112, 164195), (140, 131356), (280, 65678), (560, 32839)]