21489944

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12379}}^1$

素因数の和:12423

約数の個数: 32

約数和(自身を含む): 47539200

約数和(自身を除く): 26049256

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 12379, 24758, 49516, 86653, 99032, 173306, 346612, 383749, 693224, 767498, 1534996, 2686243, 3069992, 5372486, 10744972, 21489944]

約数ペア:

[(1, 21489944), (2, 10744972), (4, 5372486), (7, 3069992), (8, 2686243), (14, 1534996), (28, 767498), (31, 693224), (56, 383749), (62, 346612), (124, 173306), (217, 99032), (248, 86653), (434, 49516), (868, 24758), (1736, 12379)]