17780140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18143}}^1$

素因数の和:18166

約数の個数: 36

約数和(自身を含む): 43436736

約数和(自身を除く): 25656596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18143, 36286, 72572, 90715, 127001, 181430, 254002, 362860, 508004, 635005, 889007, 1270010, 1778014, 2540020, 3556028, 4445035, 8890070, 17780140]

約数ペア:

[(1, 17780140), (2, 8890070), (4, 4445035), (5, 3556028), (7, 2540020), (10, 1778014), (14, 1270010), (20, 889007), (28, 635005), (35, 508004), (49, 362860), (70, 254002), (98, 181430), (140, 127001), (196, 90715), (245, 72572), (490, 36286), (980, 18143)]