19940984

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4001}}^1$

素因数の和:4103

約数の個数: 32

約数和(自身を含む): 43221600

約数和(自身を除く): 23280616

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4001, 4984, 8002, 16004, 28007, 32008, 56014, 112028, 224056, 356089, 712178, 1424356, 2492623, 2848712, 4985246, 9970492, 19940984]

約数ペア:

[(1, 19940984), (2, 9970492), (4, 4985246), (7, 2848712), (8, 2492623), (14, 1424356), (28, 712178), (56, 356089), (89, 224056), (178, 112028), (356, 56014), (623, 32008), (712, 28007), (1246, 16004), (2492, 8002), (4001, 4984)]