78365420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4027}}^1$

素因数の和:4182

約数の個数: 48

約数和(自身を含む): 189477120

約数和(自身を除く): 111111700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4027, 4865, 8054, 9730, 16108, 19460, 20135, 28189, 40270, 56378, 80540, 112756, 140945, 281890, 559753, 563780, 1119506, 2239012, 2798765, 3918271, 5597530, 7836542, 11195060, 15673084, 19591355, 39182710, 78365420]

約数ペア:

[(1, 78365420), (2, 39182710), (4, 19591355), (5, 15673084), (7, 11195060), (10, 7836542), (14, 5597530), (20, 3918271), (28, 2798765), (35, 2239012), (70, 1119506), (139, 563780), (140, 559753), (278, 281890), (556, 140945), (695, 112756), (973, 80540), (1390, 56378), (1946, 40270), (2780, 28189), (3892, 20135), (4027, 19460), (4865, 16108), (8054, 9730)]