18819220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{587}}^1$

素因数の和:832

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 26621420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 587, 916, 1145, 1174, 1603, 2290, 2348, 2935, 3206, 4109, 4580, 5870, 6412, 8015, 8218, 11740, 16030, 16436, 20545, 32060, 41090, 82180, 134423, 268846, 537692, 672115, 940961, 1344230, 1881922, 2688460, 3763844, 4704805, 9409610, 18819220]

約数ペア:

[(1, 18819220), (2, 9409610), (4, 4704805), (5, 3763844), (7, 2688460), (10, 1881922), (14, 1344230), (20, 940961), (28, 672115), (35, 537692), (70, 268846), (140, 134423), (229, 82180), (458, 41090), (587, 32060), (916, 20545), (1145, 16436), (1174, 16030), (1603, 11740), (2290, 8218), (2348, 8015), (2935, 6412), (3206, 5870), (4109, 4580)]