30427880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{401}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 78727680

約数和(自身を除く): 48299800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 271, 280, 401, 542, 802, 1084, 1355, 1604, 1897, 2005, 2168, 2710, 2807, 3208, 3794, 4010, 5420, 5614, 7588, 8020, 9485, 10840, 11228, 14035, 15176, 16040, 18970, 22456, 28070, 37940, 56140, 75880, 108671, 112280, 217342, 434684, 543355, 760697, 869368, 1086710, 1521394, 2173420, 3042788, 3803485, 4346840, 6085576, 7606970, 15213940, 30427880]

約数ペア:

[(1, 30427880), (2, 15213940), (4, 7606970), (5, 6085576), (7, 4346840), (8, 3803485), (10, 3042788), (14, 2173420), (20, 1521394), (28, 1086710), (35, 869368), (40, 760697), (56, 543355), (70, 434684), (140, 217342), (271, 112280), (280, 108671), (401, 75880), (542, 56140), (802, 37940), (1084, 28070), (1355, 22456), (1604, 18970), (1897, 16040), (2005, 15176), (2168, 14035), (2710, 11228), (2807, 10840), (3208, 9485), (3794, 8020), (4010, 7588), (5420, 5614)]