31661420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1627}}^1$

素因数の和:1782

約数の個数: 48

約数和(自身を含む): 76581120

約数和(自身を除く): 44919700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1627, 1946, 2780, 3254, 3892, 4865, 6508, 8135, 9730, 11389, 16270, 19460, 22778, 32540, 45556, 56945, 113890, 226153, 227780, 452306, 904612, 1130765, 1583071, 2261530, 3166142, 4523060, 6332284, 7915355, 15830710, 31661420]

約数ペア:

[(1, 31661420), (2, 15830710), (4, 7915355), (5, 6332284), (7, 4523060), (10, 3166142), (14, 2261530), (20, 1583071), (28, 1130765), (35, 904612), (70, 452306), (139, 227780), (140, 226153), (278, 113890), (556, 56945), (695, 45556), (973, 32540), (1390, 22778), (1627, 19460), (1946, 16270), (2780, 11389), (3254, 9730), (3892, 8135), (4865, 6508)]