20189726540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11342543}}^1$

素因数の和:11342641

約数の個数: 24

約数和(自身を含む): 42874816320

約数和(自身を除く): 22685089780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11342543, 22685086, 45370172, 56712715, 113425430, 226850860, 1009486327, 2018972654, 4037945308, 5047431635, 10094863270, 20189726540]

約数ペア:

[(1, 20189726540), (2, 10094863270), (4, 5047431635), (5, 4037945308), (10, 2018972654), (20, 1009486327), (89, 226850860), (178, 113425430), (356, 56712715), (445, 45370172), (890, 22685086), (1780, 11342543)]