28757680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{577}}^1$

素因数の和:686

約数の個数: 80

約数和(自身を含む): 77405760

約数和(自身を除く): 48648080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 577, 623, 712, 890, 1154, 1246, 1424, 1780, 2308, 2492, 2885, 3115, 3560, 4039, 4616, 4984, 5770, 6230, 7120, 8078, 9232, 9968, 11540, 12460, 16156, 20195, 23080, 24920, 32312, 40390, 46160, 49840, 51353, 64624, 80780, 102706, 161560, 205412, 256765, 323120, 359471, 410824, 513530, 718942, 821648, 1027060, 1437884, 1797355, 2054120, 2875768, 3594710, 4108240, 5751536, 7189420, 14378840, 28757680]

約数ペア:

[(1, 28757680), (2, 14378840), (4, 7189420), (5, 5751536), (7, 4108240), (8, 3594710), (10, 2875768), (14, 2054120), (16, 1797355), (20, 1437884), (28, 1027060), (35, 821648), (40, 718942), (56, 513530), (70, 410824), (80, 359471), (89, 323120), (112, 256765), (140, 205412), (178, 161560), (280, 102706), (356, 80780), (445, 64624), (560, 51353), (577, 49840), (623, 46160), (712, 40390), (890, 32312), (1154, 24920), (1246, 23080), (1424, 20195), (1780, 16156), (2308, 12460), (2492, 11540), (2885, 9968), (3115, 9232), (3560, 8078), (4039, 7120), (4616, 6230), (4984, 5770)]