61551980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3163}}^1$

素因数の和:3318

約数の個数: 48

約数和(自身を含む): 148834560

約数和(自身を除く): 87282580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3163, 3892, 4865, 6326, 9730, 12652, 15815, 19460, 22141, 31630, 44282, 63260, 88564, 110705, 221410, 439657, 442820, 879314, 1758628, 2198285, 3077599, 4396570, 6155198, 8793140, 12310396, 15387995, 30775990, 61551980]

約数ペア:

[(1, 61551980), (2, 30775990), (4, 15387995), (5, 12310396), (7, 8793140), (10, 6155198), (14, 4396570), (20, 3077599), (28, 2198285), (35, 1758628), (70, 879314), (139, 442820), (140, 439657), (278, 221410), (556, 110705), (695, 88564), (973, 63260), (1390, 44282), (1946, 31630), (2780, 22141), (3163, 19460), (3892, 15815), (4865, 12652), (6326, 9730)]