30143540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1549}}^1$

素因数の和:1704

約数の個数: 48

約数和(自身を含む): 72912000

約数和(自身を除く): 42768460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1549, 1946, 2780, 3098, 3892, 4865, 6196, 7745, 9730, 10843, 15490, 19460, 21686, 30980, 43372, 54215, 108430, 215311, 216860, 430622, 861244, 1076555, 1507177, 2153110, 3014354, 4306220, 6028708, 7535885, 15071770, 30143540]

約数ペア:

[(1, 30143540), (2, 15071770), (4, 7535885), (5, 6028708), (7, 4306220), (10, 3014354), (14, 2153110), (20, 1507177), (28, 1076555), (35, 861244), (70, 430622), (139, 216860), (140, 215311), (278, 108430), (556, 54215), (695, 43372), (973, 30980), (1390, 21686), (1549, 19460), (1946, 15490), (2780, 10843), (3098, 9730), (3892, 7745), (4865, 6196)]