20400030

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{32381}}^1$

素因数の和:32401

約数の個数: 48

約数和(自身を含む): 60619104

約数和(自身を除く): 40219074

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 32381, 64762, 97143, 161905, 194286, 226667, 291429, 323810, 453334, 485715, 582858, 680001, 971430, 1133335, 1360002, 1457145, 2040003, 2266670, 2914290, 3400005, 4080006, 6800010, 10200015, 20400030]

約数ペア:

[(1, 20400030), (2, 10200015), (3, 6800010), (5, 4080006), (6, 3400005), (7, 2914290), (9, 2266670), (10, 2040003), (14, 1457145), (15, 1360002), (18, 1133335), (21, 971430), (30, 680001), (35, 582858), (42, 485715), (45, 453334), (63, 323810), (70, 291429), (90, 226667), (105, 194286), (126, 161905), (210, 97143), (315, 64762), (630, 32381)]