28807140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2153}}^1$

素因数の和:2388

約数の個数: 48

約数和(自身を含む): 81059328

約数和(自身を除く): 52252188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 1115, 1338, 2153, 2230, 2676, 3345, 4306, 4460, 6459, 6690, 8612, 10765, 12918, 13380, 21530, 25836, 32295, 43060, 64590, 129180, 480119, 960238, 1440357, 1920476, 2400595, 2880714, 4801190, 5761428, 7201785, 9602380, 14403570, 28807140]

約数ペア:

[(1, 28807140), (2, 14403570), (3, 9602380), (4, 7201785), (5, 5761428), (6, 4801190), (10, 2880714), (12, 2400595), (15, 1920476), (20, 1440357), (30, 960238), (60, 480119), (223, 129180), (446, 64590), (669, 43060), (892, 32295), (1115, 25836), (1338, 21530), (2153, 13380), (2230, 12918), (2676, 10765), (3345, 8612), (4306, 6690), (4460, 6459)]