81844140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194867}}^1$

素因数の和:194886

約数の個数: 48

約数和(自身を含む): 261902592

約数和(自身を除く): 180058452

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194867, 389734, 584601, 779468, 974335, 1169202, 1364069, 1948670, 2338404, 2728138, 2923005, 3897340, 4092207, 5456276, 5846010, 6820345, 8184414, 11692020, 13640690, 16368828, 20461035, 27281380, 40922070, 81844140]

約数ペア:

[(1, 81844140), (2, 40922070), (3, 27281380), (4, 20461035), (5, 16368828), (6, 13640690), (7, 11692020), (10, 8184414), (12, 6820345), (14, 5846010), (15, 5456276), (20, 4092207), (21, 3897340), (28, 2923005), (30, 2728138), (35, 2338404), (42, 1948670), (60, 1364069), (70, 1169202), (84, 974335), (105, 779468), (140, 584601), (210, 389734), (420, 194867)]