2221501720

素因数分解:

$2^3\times 5^1\times {\mathrm{55537543}}^1$

素因数の和:55537554

約数の個数: 16

約数和(自身を含む): 4998378960

約数和(自身を除く): 2776877240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 55537543, 111075086, 222150172, 277687715, 444300344, 555375430, 1110750860, 2221501720]

約数ペア:

[(1, 2221501720), (2, 1110750860), (4, 555375430), (5, 444300344), (8, 277687715), (10, 222150172), (20, 111075086), (40, 55537543)]