21749840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38839}}^1$

素因数の和:38859

約数の個数: 40

約数和(自身を含む): 57793920

約数和(自身を除く): 36044080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38839, 77678, 155356, 194195, 271873, 310712, 388390, 543746, 621424, 776780, 1087492, 1359365, 1553560, 2174984, 2718730, 3107120, 4349968, 5437460, 10874920, 21749840]

約数ペア:

[(1, 21749840), (2, 10874920), (4, 5437460), (5, 4349968), (7, 3107120), (8, 2718730), (10, 2174984), (14, 1553560), (16, 1359365), (20, 1087492), (28, 776780), (35, 621424), (40, 543746), (56, 388390), (70, 310712), (80, 271873), (112, 194195), (140, 155356), (280, 77678), (560, 38839)]