20443880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16487}}^1$

素因数の和:16529

約数の個数: 32

約数和(自身を含む): 47485440

約数和(自身を除く): 27041560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16487, 32974, 65948, 82435, 131896, 164870, 329740, 511097, 659480, 1022194, 2044388, 2555485, 4088776, 5110970, 10221940, 20443880]

約数ペア:

[(1, 20443880), (2, 10221940), (4, 5110970), (5, 4088776), (8, 2555485), (10, 2044388), (20, 1022194), (31, 659480), (40, 511097), (62, 329740), (124, 164870), (155, 131896), (248, 82435), (310, 65948), (620, 32974), (1240, 16487)]